diff --git a/Doc/documentation.html b/Doc/documentation.html
index 543e1c85..1c57340e 100644
--- a/Doc/documentation.html
+++ b/Doc/documentation.html
@@ -822,6 +822,8 @@ <h1>mod.io UE4 Plugin Documentation</h1>
 <li><a href="#QuerySystemInstallations">Query System Installations</a></li>
 <li><a href="#K2_UnsubscribeFromModAsync">UnsubscribeFromModAsync</a></li>
 <li><a href="#K2_SubscribeToModAsync">SubscribeToModAsync</a></li>
+<li><a href="#K2_SubmitNewModFileForMod">SubmitNewModFileForMod</a></li>
+<li><a href="#K2_SubmitNewModAsync">SubmitNewModAsync</a></li>
 <li><a href="#K2_SubmitModRatingAsync">SubmitModRatingAsync</a></li>
 <li><a href="#K2_ShutdownAsync">ShutdownAsync</a></li>
 <li><a href="#K2_RequestEmailAuthCodeAsync">RequestEmailAuthCodeAsync</a></li>
@@ -838,6 +840,7 @@ <h1>mod.io UE4 Plugin Documentation</h1>
 <li><a href="#K2_GetModMediaAvatarAsync">GetModMediaAsync (Avatar)</a></li>
 <li><a href="#K2_GetModInfoAsync">GetModInfoAsync</a></li>
 <li><a href="#K2_GetModDependenciesAsync">GetModDependenciesAsync</a></li>
+<li><a href="#K2_GetModCreationHandle">GetModCreationHandle</a></li>
 <li><a href="#K2_FetchExternalUpdatesAsync">FetchExternalUpdatesAsync</a></li>
 <li><a href="#K2_EnableModManagement">EnableModManagement</a></li>
 <li><a href="#K2_ClearUserDataAsync">ClearUserDataAsync</a></li>
@@ -876,15 +879,19 @@ <h1>mod.io UE4 Plugin Documentation</h1>
 <li><a href="#_modiooptionalmodtagoptions">ModioOptionalModTagOptions</a></li>
 <li><a href="#_modiooptionalterms">ModioOptionalTerms</a></li>
 <li><a href="#_modiooptionalmoddependencylist">ModioOptionalModDependencyList</a></li>
+<li><a href="#_modiooptionalmodid">ModioOptionalModID</a></li>
 <li><a href="#_modioauthenticationparams">ModioAuthenticationParams</a></li>
 <li><a href="#_modioemailauthcode">ModioEmailAuthCode</a></li>
 <li><a href="#_modioemailaddress">ModioEmailAddress</a></li>
 <li><a href="#_modioapikey">ModioApiKey</a></li>
 <li><a href="#_modiogameid">ModioGameID</a></li>
+<li><a href="#_modiocreatemodfileparams">ModioCreateModFileParams</a></li>
+<li><a href="#_modiocreatemodparams">ModioCreateModParams</a></li>
 <li><a href="#_modiofilterparams">ModioFilterParams</a></li>
 <li><a href="#_modioimage">ModioImage</a></li>
 <li><a href="#_modioinitializeoptions">ModioInitializeOptions</a></li>
 <li><a href="#_modiomodcollectionentry">ModioModCollectionEntry</a></li>
+<li><a href="#_modiomodcreationhandle">ModioModCreationHandle</a></li>
 <li><a href="#_modiomoddependencylist">ModioModDependencyList</a></li>
 <li><a href="#_modiomoddependency">ModioModDependency</a></li>
 <li><a href="#_modiooptionalmodprogressinfo">ModioOptionalModProgressInfo</a></li>
@@ -1984,6 +1991,176 @@ <h5 id="_parameters_9" class="discrete">Parameters</h5>
 <hr>
 </div>
 <div class="sect3">
+<h4 id="K2_SubmitNewModFileForMod">SubmitNewModFileForMod</h4>
+<div class="imageblock">
+<div class="content">
+<img src="img/nd_img_K2_SubmitNewModFileForMod.png" alt="nd img K2 SubmitNewModFileForMod">
+</div>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="rouge highlight"><code data-lang="c++"><span class="kt">void</span> <span class="n">K2_SubmitNewModFileForMod</span><span class="p">(</span><span class="n">FModioModID</span> <span class="n">Mod</span><span class="p">,</span> <span class="n">FModioCreateModFileParams</span> <span class="n">Params</span><span class="p">)</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Queues the upload of a new mod file release for the specified mod, using the submitted parameters. The upload&#8217;s progress can be tracked in the same way as downloads; when completed, a Mod Management Event will be triggered with the result code for the upload.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+This function is part of an experimental feature and is subject to change.
+</td>
+</tr>
+</table>
+</div>
+<h5 id="_requirements" class="discrete">Requirements</h5>
+<div class="ulist">
+<ul>
+<li>
+<p><em>initialized-sdk</em></p>
+</li>
+<li>
+<p><em>authenticated-user</em></p>
+</li>
+<li>
+<p><em>no-rate-limiting</em></p>
+</li>
+</ul>
+</div>
+<h5 id="_parameters_10" class="discrete">Parameters</h5>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 25%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Target</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Modio Subsystem Object Reference</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Mod</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">The ID of the mod you are submitting a file for</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Params</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Information about the mod file being created, including the root path of the directory that will be archived</p></td>
+</tr>
+</tbody>
+</table>
+<h5 id="_error_values" class="discrete">Error Values</h5>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 25%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">UserDataError::InvalidUser</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">No authenticated user</p></td>
+</tr>
+</tbody>
+</table>
+<hr>
+</div>
+<div class="sect3">
+<h4 id="K2_SubmitNewModAsync">SubmitNewModAsync</h4>
+<div class="imageblock">
+<div class="content">
+<img src="img/nd_img_K2_SubmitNewModAsync.png" alt="nd img K2 SubmitNewModAsync">
+</div>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="rouge highlight"><code data-lang="c++"><span class="kt">void</span> <span class="n">K2_SubmitNewModAsync</span><span class="p">(</span><span class="n">FModioModCreationHandle</span> <span class="n">Handle</span><span class="p">,</span> <span class="n">FModioCreateModParams</span> <span class="n">Params</span><span class="p">,</span> <span class="n">FOnSubmitNewModDelegate</span> <span class="n">Callback</span><span class="p">)</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Requests the creation of a new mod on the server with the specified parameters</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+This function is part of an experimental feature and is subject to change.
+</td>
+</tr>
+</table>
+</div>
+<h5 id="_requirements_2" class="discrete">Requirements</h5>
+<div class="ulist">
+<ul>
+<li>
+<p><em>initialized-sdk</em></p>
+</li>
+<li>
+<p><em>authenticated-user</em></p>
+</li>
+<li>
+<p><em>no-rate-limiting</em></p>
+</li>
+</ul>
+</div>
+<h5 id="_parameters_11" class="discrete">Parameters</h5>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 25%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Target</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Modio Subsystem Object Reference</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Handle</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">The ModCreationHandle for this submission. Once this method invokes your callback indicating success, the ModCreationHandle is invalid for the rest of the session and you should request a new one for the next submission attempt.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Params</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Information about the new mod to create</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Callback</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Callback providing a status code and an optional FModioModID for the newly created mod</p></td>
+</tr>
+</tbody>
+</table>
+<h5 id="_error_values_2" class="discrete">Error Values</h5>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 25%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">GenericError::SDKNotInitialized</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">SDK not initialized</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">UserDataError::InvalidUser</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">No authenticated user</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">NetworkError</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Couldn&#8217;t connect to mod.io servers</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">InvalidArgsError</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Some fields in Params did not pass validation</p></td>
+</tr>
+</tbody>
+</table>
+<hr>
+</div>
+<div class="sect3">
 <h4 id="K2_SubmitModRatingAsync">SubmitModRatingAsync</h4>
 <div class="imageblock">
 <div class="content">
@@ -1998,7 +2175,7 @@ <h4 id="K2_SubmitModRatingAsync">SubmitModRatingAsync</h4>
 <div class="paragraph">
 <p>Submits a rating for a mod on behalf of the current user. Submit a neutral rating to effectively clear a rating already submitted by a user. Submitting other values will overwrite any existing rating submitted by this user.</p>
 </div>
-<h5 id="_requirements" class="discrete">Requirements</h5>
+<h5 id="_requirements_3" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2012,7 +2189,7 @@ <h5 id="_requirements" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_10" class="discrete">Parameters</h5>
+<h5 id="_parameters_12" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2037,7 +2214,7 @@ <h5 id="_parameters_10" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values" class="discrete">Error Values</h5>
+<h5 id="_error_values_3" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2079,7 +2256,7 @@ <h4 id="K2_ShutdownAsync">ShutdownAsync</h4>
 <div class="paragraph">
 <p>Cancels any running internal operations, frees SDK resources, and invokes any pending callbacks with Modio::GenericError::OperationCanceled . This function will NOT block while the deinitialization occurs.</p>
 </div>
-<h5 id="_parameters_11" class="discrete">Parameters</h5>
+<h5 id="_parameters_13" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2113,7 +2290,7 @@ <h4 id="K2_RequestEmailAuthCodeAsync">RequestEmailAuthCodeAsync</h4>
 <div class="paragraph">
 <p>Begins email authentication for the current session by requesting a one-time code be sent to the specified email address if it is associated with a Mod.io account</p>
 </div>
-<h5 id="_requirements_2" class="discrete">Requirements</h5>
+<h5 id="_requirements_4" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2127,7 +2304,7 @@ <h5 id="_requirements_2" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_12" class="discrete">Parameters</h5>
+<h5 id="_parameters_14" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2148,7 +2325,7 @@ <h5 id="_parameters_12" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_2" class="discrete">Error Values</h5>
+<h5 id="_error_values_4" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2186,7 +2363,7 @@ <h4 id="K2_ReportContentAsync">ReportContentAsync</h4>
 <div class="paragraph">
 <p>Sends a content report to mod.io. When using this function, please inform your users that if they provide their contact name or details in the Report parameter, that those may be shared with the person responsible for the content being reported. For more information on what data in a report will be shared with whom, please see <a href="https://mod.io/report/widget">our website&#8217;s report form</a> for more information.</p>
 </div>
-<h5 id="_requirements_3" class="discrete">Requirements</h5>
+<h5 id="_requirements_5" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2194,7 +2371,7 @@ <h5 id="_requirements_3" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_13" class="discrete">Parameters</h5>
+<h5 id="_parameters_15" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2215,7 +2392,7 @@ <h5 id="_parameters_13" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_3" class="discrete">Error Values</h5>
+<h5 id="_error_values_5" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2249,7 +2426,7 @@ <h4 id="K2_QueryUserProfile">QueryUserProfile</h4>
 <div class="paragraph">
 <p>Fetches the currently authenticated Mod.io user profile if there is one associated with the current platform user</p>
 </div>
-<h5 id="_parameters_14" class="discrete">Parameters</h5>
+<h5 id="_parameters_16" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2287,7 +2464,7 @@ <h4 id="K2_QueryCurrentModUpdate">QueryCurrentModUpdate</h4>
 <div class="paragraph">
 <p>Provides progress information for a mod installation or update operation if one is currently in progress.</p>
 </div>
-<h5 id="_parameters_15" class="discrete">Parameters</h5>
+<h5 id="_parameters_17" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2325,7 +2502,7 @@ <h4 id="K2_ListAllModsAsync">ListAllModsAsync</h4>
 <div class="paragraph">
 <p>Provides a list of mods for the current game, that match the parameters specified in the filter</p>
 </div>
-<h5 id="_requirements_4" class="discrete">Requirements</h5>
+<h5 id="_requirements_6" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2336,7 +2513,7 @@ <h5 id="_requirements_4" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_16" class="discrete">Parameters</h5>
+<h5 id="_parameters_18" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2357,7 +2534,7 @@ <h5 id="_parameters_16" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_4" class="discrete">Error Values</h5>
+<h5 id="_error_values_6" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2391,7 +2568,7 @@ <h4 id="K2_InitializeAsync">InitializeAsync</h4>
 <div class="paragraph">
 <p>Initializes the SDK for the given user. Loads the state of mods installed on the system as well as the set of mods the specified user has installed on this device</p>
 </div>
-<h5 id="_parameters_17" class="discrete">Parameters</h5>
+<h5 id="_parameters_19" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2429,7 +2606,7 @@ <h4 id="K2_GetUserMediaAvatarAsync">GetUserMediaAsync (Avatar)</h4>
 <div class="paragraph">
 <p>Downloads the avatar of the currently authenticated user. Will only perform a download if there is no local cache of the avatar or if that cached copy is out-of-date.</p>
 </div>
-<h5 id="_requirements_5" class="discrete">Requirements</h5>
+<h5 id="_requirements_7" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2443,7 +2620,7 @@ <h5 id="_requirements_5" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_18" class="discrete">Parameters</h5>
+<h5 id="_parameters_20" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2464,7 +2641,7 @@ <h5 id="_parameters_18" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_5" class="discrete">Error Values</h5>
+<h5 id="_error_values_7" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2502,7 +2679,7 @@ <h4 id="K2_GetTermsOfUseAsync">GetTermsOfUseAsync</h4>
 <div class="paragraph">
 <p>This function retrieves the information required for a game to display the mod.io terms of use to a player who wishes to create a mod.io account</p>
 </div>
-<h5 id="_requirements_6" class="discrete">Requirements</h5>
+<h5 id="_requirements_8" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2510,7 +2687,7 @@ <h5 id="_requirements_6" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_19" class="discrete">Parameters</h5>
+<h5 id="_parameters_21" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2535,7 +2712,7 @@ <h5 id="_parameters_19" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_6" class="discrete">Error Values</h5>
+<h5 id="_error_values_8" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2569,7 +2746,7 @@ <h4 id="K2_GetModTagOptionsAsync">GetModTagOptionsAsync</h4>
 <div class="paragraph">
 <p>Fetches the available tags used on mods for the current game. These tags can them be used in conjunction with the FilterParams passed to ListAllMods Will be cached when first received</p>
 </div>
-<h5 id="_requirements_7" class="discrete">Requirements</h5>
+<h5 id="_requirements_9" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2580,7 +2757,7 @@ <h5 id="_requirements_7" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_20" class="discrete">Parameters</h5>
+<h5 id="_parameters_22" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2597,7 +2774,7 @@ <h5 id="_parameters_20" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_7" class="discrete">Error Values</h5>
+<h5 id="_error_values_9" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2631,7 +2808,7 @@ <h4 id="K2_GetModMediaLogoAsync">GetModMediaAsync (Logo)</h4>
 <div class="paragraph">
 <p>Downloads the logo for the specified mod. Will use existing file if it is already present on disk</p>
 </div>
-<h5 id="_requirements_8" class="discrete">Requirements</h5>
+<h5 id="_requirements_10" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2642,7 +2819,7 @@ <h5 id="_requirements_8" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_21" class="discrete">Parameters</h5>
+<h5 id="_parameters_23" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2667,7 +2844,7 @@ <h5 id="_parameters_21" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_8" class="discrete">Error Values</h5>
+<h5 id="_error_values_10" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2709,7 +2886,7 @@ <h4 id="K2_GetModMediaGalleryImageAsync">GetModMediaAsync (Gallery Image)</h4>
 <div class="paragraph">
 <p>Get a gallery image for the specified mod ID. If it already exists on disk the file will be reused unless it is outdated</p>
 </div>
-<h5 id="_requirements_9" class="discrete">Requirements</h5>
+<h5 id="_requirements_11" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2720,7 +2897,7 @@ <h5 id="_requirements_9" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_22" class="discrete">Parameters</h5>
+<h5 id="_parameters_24" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2749,7 +2926,7 @@ <h5 id="_parameters_22" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_9" class="discrete">Error Values</h5>
+<h5 id="_error_values_11" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2791,7 +2968,7 @@ <h4 id="K2_GetModMediaAvatarAsync">GetModMediaAsync (Avatar)</h4>
 <div class="paragraph">
 <p>Downloads the creator avatar for a specified mod. Will use existing file if it is already present on disk and not outdated</p>
 </div>
-<h5 id="_requirements_10" class="discrete">Requirements</h5>
+<h5 id="_requirements_12" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2802,7 +2979,7 @@ <h5 id="_requirements_10" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_23" class="discrete">Parameters</h5>
+<h5 id="_parameters_25" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2827,7 +3004,7 @@ <h5 id="_parameters_23" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_10" class="discrete">Error Values</h5>
+<h5 id="_error_values_12" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2869,7 +3046,7 @@ <h4 id="K2_GetModInfoAsync">GetModInfoAsync</h4>
 <div class="paragraph">
 <p>Fetches detailed information about the specified mod, including description and file metadata for the most recent release</p>
 </div>
-<h5 id="_requirements_11" class="discrete">Requirements</h5>
+<h5 id="_requirements_13" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2880,7 +3057,7 @@ <h5 id="_requirements_11" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_24" class="discrete">Parameters</h5>
+<h5 id="_parameters_26" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2901,7 +3078,7 @@ <h5 id="_parameters_24" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_11" class="discrete">Error Values</h5>
+<h5 id="_error_values_13" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2951,7 +3128,7 @@ <h4 id="K2_GetModDependenciesAsync">GetModDependenciesAsync</h4>
 </tr>
 </table>
 </div>
-<h5 id="_requirements_12" class="discrete">Requirements</h5>
+<h5 id="_requirements_14" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -2962,7 +3139,7 @@ <h5 id="_requirements_12" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_25" class="discrete">Parameters</h5>
+<h5 id="_parameters_27" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -2983,7 +3160,7 @@ <h5 id="_parameters_25" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_12" class="discrete">Error Values</h5>
+<h5 id="_error_values_14" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3003,6 +3180,52 @@ <h5 id="_error_values_12" class="discrete">Error Values</h5>
 <hr>
 </div>
 <div class="sect3">
+<h4 id="K2_GetModCreationHandle">GetModCreationHandle</h4>
+<div class="imageblock">
+<div class="content">
+<img src="img/nd_img_K2_GetModCreationHandle.png" alt="nd img K2 GetModCreationHandle">
+</div>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="rouge highlight"><code data-lang="c++"><span class="n">FModioModCreationHandle</span> <span class="n">K2_GetModCreationHandle</span><span class="p">()</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Gets a new mod handle for use with SubmitNewModAsync.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<div class="title">Note</div>
+</td>
+<td class="content">
+This function is part of an experimental feature and is subject to change.
+</td>
+</tr>
+</table>
+</div>
+<h5 id="_parameters_28" class="discrete">Parameters</h5>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 25%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Target</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Modio Subsystem Object Reference</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="paramname">Return Value</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">New handle</p></td>
+</tr>
+</tbody>
+</table>
+<hr>
+</div>
+<div class="sect3">
 <h4 id="K2_FetchExternalUpdatesAsync">FetchExternalUpdatesAsync</h4>
 <div class="imageblock">
 <div class="content">
@@ -3017,7 +3240,7 @@ <h4 id="K2_FetchExternalUpdatesAsync">FetchExternalUpdatesAsync</h4>
 <div class="paragraph">
 <p>Synchronises the local list of the current user&#8217;s subscribed mods with the server. Any mods that have been externally subscribed will be automatically marked for installation, and mods that have been externally removed from the user&#8217;s subscriptions may be uninstalled if no other local users have a current subscription.</p>
 </div>
-<h5 id="_parameters_26" class="discrete">Parameters</h5>
+<h5 id="_parameters_29" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3051,7 +3274,7 @@ <h4 id="K2_EnableModManagement">EnableModManagement</h4>
 <div class="paragraph">
 <p>Enables the automatic management of installed mods on the system based on the user&#8217;s subscriptions.</p>
 </div>
-<h5 id="_parameters_27" class="discrete">Parameters</h5>
+<h5 id="_parameters_30" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3085,7 +3308,7 @@ <h4 id="K2_ClearUserDataAsync">ClearUserDataAsync</h4>
 <div class="paragraph">
 <p>De-authenticates the current Mod.io user for the current session, and clears all user-specific data stored on the current device. Any subscribed mods that are installed but do not have other local users subscribed will be uninstalled</p>
 </div>
-<h5 id="_requirements_13" class="discrete">Requirements</h5>
+<h5 id="_requirements_15" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -3099,7 +3322,7 @@ <h5 id="_requirements_13" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_28" class="discrete">Parameters</h5>
+<h5 id="_parameters_31" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3116,7 +3339,7 @@ <h5 id="_parameters_28" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_13" class="discrete">Error Values</h5>
+<h5 id="_error_values_15" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3150,7 +3373,7 @@ <h4 id="K2_AuthenticateUserExternalAsync">AuthenticateUserExternalAsync</h4>
 <div class="paragraph">
 <p>Uses platform-specific authentication to associate a Mod.io user account with the current platform user</p>
 </div>
-<h5 id="_requirements_14" class="discrete">Requirements</h5>
+<h5 id="_requirements_16" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -3164,7 +3387,7 @@ <h5 id="_requirements_14" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_29" class="discrete">Parameters</h5>
+<h5 id="_parameters_32" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3189,7 +3412,7 @@ <h5 id="_parameters_29" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_14" class="discrete">Error Values</h5>
+<h5 id="_error_values_16" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3227,7 +3450,7 @@ <h4 id="K2_AuthenticateUserEmailAsync">AuthenticateUserEmailAsync</h4>
 <div class="paragraph">
 <p>Completes email authentication for the current session by submitting the one-time code sent to the user&#8217;s email address</p>
 </div>
-<h5 id="_requirements_15" class="discrete">Requirements</h5>
+<h5 id="_requirements_17" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -3241,7 +3464,7 @@ <h5 id="_requirements_15" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_30" class="discrete">Parameters</h5>
+<h5 id="_parameters_33" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3262,7 +3485,7 @@ <h5 id="_parameters_30" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_15" class="discrete">Error Values</h5>
+<h5 id="_error_values_17" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3300,7 +3523,7 @@ <h4 id="IsModManagementBusy">Is Mod Management Busy</h4>
 <div class="paragraph">
 <p>Checks if the automatic management process is currently installing or removing mods</p>
 </div>
-<h5 id="_parameters_31" class="discrete">Parameters</h5>
+<h5 id="_parameters_34" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3338,7 +3561,7 @@ <h4 id="GetLastValidationError">Get Last Validation Error</h4>
 <div class="paragraph">
 <p>If the last request to the mod.io servers returned a validation failure, this function returns extended information describing the fields that failed validation.</p>
 </div>
-<h5 id="_requirements_16" class="discrete">Requirements</h5>
+<h5 id="_requirements_18" class="discrete">Requirements</h5>
 <div class="ulist">
 <ul>
 <li>
@@ -3346,7 +3569,7 @@ <h5 id="_requirements_16" class="discrete">Requirements</h5>
 </li>
 </ul>
 </div>
-<h5 id="_parameters_32" class="discrete">Parameters</h5>
+<h5 id="_parameters_35" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3384,7 +3607,7 @@ <h4 id="ForceUninstallModAsync">ForceUninstallModAsync</h4>
 <div class="paragraph">
 <p>Forcibly uninstalls a mod from the system. This is intended for use when a host application requires more room for a mod that the user wants to install, and as such will return an error if the current user is subscribed to the mod. To remove a mod the current user is subscribed to, use <a href="#K2_UnsubscribeFromModAsync">UnsubscribeFromModAsync</a>.</p>
 </div>
-<h5 id="_parameters_33" class="discrete">Parameters</h5>
+<h5 id="_parameters_36" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3405,7 +3628,7 @@ <h5 id="_parameters_33" class="discrete">Parameters</h5>
 </tr>
 </tbody>
 </table>
-<h5 id="_error_values_16" class="discrete">Error Values</h5>
+<h5 id="_error_values_18" class="discrete">Error Values</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3443,7 +3666,7 @@ <h4 id="DisableModManagement">Disable Mod Management</h4>
 <div class="paragraph">
 <p>Disables automatic installation or uninstallation of mods based on the user&#8217;s subscriptions. Allows currently processing installation to complete; will cancel any pending operations when called.</p>
 </div>
-<h5 id="_parameters_34" class="discrete">Parameters</h5>
+<h5 id="_parameters_37" class="discrete">Parameters</h5>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -3962,6 +4185,10 @@ <h3 id="_modiooptionalmoddependencylist">ModioOptionalModDependencyList</h3>
 <hr>
 </div>
 <div class="sect2">
+<h3 id="_modiooptionalmodid">ModioOptionalModID</h3>
+<hr>
+</div>
+<div class="sect2">
 <h3 id="_modioauthenticationparams">ModioAuthenticationParams</h3>
 <div class="paragraph">
 <p>Simple struct to encapsulate data passed to external authentication systems</p>
@@ -4022,6 +4249,54 @@ <h3 id="_modiogameid">ModioGameID</h3>
 <hr>
 </div>
 <div class="sect2">
+<h3 id="_modiocreatemodfileparams">ModioCreateModFileParams</h3>
+<h4 id="_variables_11" class="discrete">Variables</h4>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 20%;">
+<col style="width: 20%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variabletype"><a href="#FString">FString</a></span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">PathToModRootDirectory</span></p></td>
+<td class="tableblock halign-left valign-top"></td>
+</tr>
+</tbody>
+</table>
+<hr>
+</div>
+<div class="sect2">
+<h3 id="_modiocreatemodparams">ModioCreateModParams</h3>
+<h4 id="_variables_12" class="discrete">Variables</h4>
+<table class="tableblock frame-none grid-all stripes-odd stretch stretch">
+<colgroup>
+<col style="width: 20%;">
+<col style="width: 20%;">
+<col>
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variabletype"><a href="#FString">FString</a></span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">PathToLogoFile</span></p></td>
+<td class="tableblock halign-left valign-top"></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variabletype"><a href="#FString">FString</a></span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">Name</span></p></td>
+<td class="tableblock halign-left valign-top"></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variabletype"><a href="#FString">FString</a></span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">Summary</span></p></td>
+<td class="tableblock halign-left valign-top"></td>
+</tr>
+</tbody>
+</table>
+<hr>
+</div>
+<div class="sect2">
 <h3 id="_modiofilterparams">ModioFilterParams</h3>
 <div class="paragraph">
 <p>Class storing a set of filter parameters for use in <a href="#K2_ListAllModsAsync">ListAllModsAsync</a></p>
@@ -4033,7 +4308,7 @@ <h3 id="_modioimage">ModioImage</h3>
 <div class="paragraph">
 <p>wrapper for images that&#8217;s returned by the api</p>
 </div>
-<h4 id="_variables_11" class="discrete">Variables</h4>
+<h4 id="_variables_13" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4052,7 +4327,7 @@ <h4 id="_variables_11" class="discrete">Variables</h4>
 </div>
 <div class="sect2">
 <h3 id="_modioinitializeoptions">ModioInitializeOptions</h3>
-<h4 id="_variables_12" class="discrete">Variables</h4>
+<h4 id="_variables_14" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4092,6 +4367,10 @@ <h3 id="_modiomodcollectionentry">ModioModCollectionEntry</h3>
 <hr>
 </div>
 <div class="sect2">
+<h3 id="_modiomodcreationhandle">ModioModCreationHandle</h3>
+<hr>
+</div>
+<div class="sect2">
 <h3 id="_modiomoddependencylist">ModioModDependencyList</h3>
 <div class="paragraph">
 <p>Paged list of mod dependencies</p>
@@ -4127,7 +4406,7 @@ <h3 id="_modiomoddependency">ModioModDependency</h3>
 </tr>
 </table>
 </div>
-<h4 id="_variables_13" class="discrete">Variables</h4>
+<h4 id="_variables_15" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4158,7 +4437,7 @@ <h3 id="_modiomodprogressinfo">ModioModProgressInfo</h3>
 <div class="paragraph">
 <p>Class representing the progress of a mod installation or update</p>
 </div>
-<h4 id="_variables_14" class="discrete">Variables</h4>
+<h4 id="_variables_16" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4204,7 +4483,7 @@ <h3 id="_modioterms">ModioTerms</h3>
 <div class="paragraph">
 <p>This struct contains strings that should be displayed to a user when displaying the terms of use and offering to create a mod.io account</p>
 </div>
-<h4 id="_variables_15" class="discrete">Variables</h4>
+<h4 id="_variables_17" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4248,7 +4527,7 @@ <h4 id="_variables_15" class="discrete">Variables</h4>
 </div>
 <div class="sect2">
 <h3 id="_modiolink">ModioLink</h3>
-<h4 id="_variables_16" class="discrete">Variables</h4>
+<h4 id="_variables_18" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4284,7 +4563,7 @@ <h3 id="_modiovalidationerror">ModioValidationError</h3>
 <div class="paragraph">
 <p>Wrapper struct containing information about a field validation error</p>
 </div>
-<h4 id="_variables_17" class="discrete">Variables</h4>
+<h4 id="_variables_19" class="discrete">Variables</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 20%;">
@@ -4326,7 +4605,7 @@ <h3 id="SetPortal">Set Portal</h3>
 <div class="paragraph">
 <p>Changes the portal for the provided set of initialization options</p>
 </div>
-<h4 id="_parameters_35" class="discrete">Parameters</h4>
+<h4 id="_parameters_38" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4368,7 +4647,7 @@ <h3 id="MakeInitializeOptions">Make Initialize Options</h3>
 <div class="paragraph">
 <p>Make initialization options, should only be used in conjunction with InitializeAsync</p>
 </div>
-<h4 id="_parameters_36" class="discrete">Parameters</h4>
+<h4 id="_parameters_39" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4414,7 +4693,7 @@ <h3 id="MakeGameId">Make Game Id</h3>
 <div class="paragraph">
 <p>Create a game id from a integer, should only be used in conjunction with InitializeAsync</p>
 </div>
-<h4 id="_parameters_37" class="discrete">Parameters</h4>
+<h4 id="_parameters_40" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4448,7 +4727,7 @@ <h3 id="MakeAuthParams">Make Auth Params</h3>
 <div class="paragraph">
 <p>Creates an AuthenticationParams object</p>
 </div>
-<h4 id="_parameters_38" class="discrete">Parameters</h4>
+<h4 id="_parameters_41" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4494,7 +4773,7 @@ <h3 id="MakeApiKey">Make Api Key</h3>
 <div class="paragraph">
 <p>Create a ApiKey id from a string, should only be used in conjunction with InitializeAsync</p>
 </div>
-<h4 id="_parameters_39" class="discrete">Parameters</h4>
+<h4 id="_parameters_42" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4525,7 +4804,7 @@ <h3 id="GetValue">Get Value</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">int32</span> <span class="n">GetValue</span><span class="p">(</span><span class="n">FModioErrorCode</span> <span class="n">Error</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_40" class="discrete">Parameters</h4>
+<h4 id="_parameters_43" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4560,7 +4839,7 @@ <h3 id="GetMessage">Get Message</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FString</span> <span class="n">GetMessage</span><span class="p">(</span><span class="n">FModioErrorCode</span> <span class="n">Error</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_41" class="discrete">Parameters</h4>
+<h4 id="_parameters_44" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4595,7 +4874,7 @@ <h3 id="ErrorCodeMatches">Error Code Matches</h3>
 <div class="paragraph">
 <p>Checks if the passed-in ErrorCode matches the specified error condition</p>
 </div>
-<h4 id="_parameters_42" class="discrete">Parameters</h4>
+<h4 id="_parameters_45" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4637,7 +4916,7 @@ <h3 id="ListUserSubscriptionAsync">List User Subscription Async</h3>
 <div class="paragraph">
 <p>Runs a filter over the user&#8217;s subscription list</p>
 </div>
-<h4 id="_parameters_43" class="discrete">Parameters</h4>
+<h4 id="_parameters_46" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4752,7 +5031,7 @@ <h3 id="GetLogoSize">Get Logo Size</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FVector2D</span> <span class="n">GetLogoSize</span><span class="p">(</span><span class="n">UTexture</span><span class="o">*</span> <span class="n">Logo</span><span class="p">,</span> <span class="n">EModioLogoSize</span> <span class="n">LogoSize</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_44" class="discrete">Parameters</h4>
+<h4 id="_parameters_47" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4791,7 +5070,7 @@ <h3 id="GetGallerySize">Get Gallery Size</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FVector2D</span> <span class="n">GetGallerySize</span><span class="p">(</span><span class="n">UTexture</span><span class="o">*</span> <span class="n">GalleryImage</span><span class="p">,</span> <span class="n">EModioGallerySize</span> <span class="n">GallerySize</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_45" class="discrete">Parameters</h4>
+<h4 id="_parameters_48" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4830,7 +5109,7 @@ <h3 id="GetAvatarSize">Get Avatar Size</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FVector2D</span> <span class="n">GetAvatarSize</span><span class="p">(</span><span class="n">UTexture</span><span class="o">*</span> <span class="n">Avatar</span><span class="p">,</span> <span class="n">EModioAvatarSize</span> <span class="n">AvatarSize</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_46" class="discrete">Parameters</h4>
+<h4 id="_parameters_49" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4869,7 +5148,7 @@ <h3 id="GetPath">Get Path</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FString</span> <span class="n">GetPath</span><span class="p">(</span><span class="n">FModioModCollectionEntry</span> <span class="n">Entry</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_47" class="discrete">Parameters</h4>
+<h4 id="_parameters_50" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4904,7 +5183,7 @@ <h3 id="GetModState">Get Mod State</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">EModioModState</span> <span class="n">GetModState</span><span class="p">(</span><span class="n">FModioModCollectionEntry</span> <span class="n">Entry</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_48" class="discrete">Parameters</h4>
+<h4 id="_parameters_51" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4939,7 +5218,7 @@ <h3 id="GetModProfile">Get Mod Profile</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FModioModInfo</span> <span class="n">GetModProfile</span><span class="p">(</span><span class="n">FModioModCollectionEntry</span> <span class="n">Entry</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_49" class="discrete">Parameters</h4>
+<h4 id="_parameters_52" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -4974,7 +5253,7 @@ <h3 id="GetID">Get ID</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FModioModID</span> <span class="n">GetID</span><span class="p">(</span><span class="n">FModioModCollectionEntry</span> <span class="n">Entry</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_50" class="discrete">Parameters</h4>
+<h4 id="_parameters_53" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -5012,7 +5291,7 @@ <h3 id="Pct_Int64Int64">Get Percent (integer64/integer64)</h3>
 <div class="paragraph">
 <p>Dividend/Divisor and return the floating point result with no checks *</p>
 </div>
-<h4 id="_parameters_51" class="discrete">Parameters</h4>
+<h4 id="_parameters_54" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -5047,7 +5326,7 @@ <h3 id="IsValidSecurityCodeFormat">Is Valid Security Code Format</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="kt">bool</span> <span class="n">IsValidSecurityCodeFormat</span><span class="p">(</span><span class="n">FString</span> <span class="n">String</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_52" class="discrete">Parameters</h4>
+<h4 id="_parameters_55" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -5082,7 +5361,7 @@ <h3 id="IsValidEmailAddressFormat">Is Valid Email Address Format</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="kt">bool</span> <span class="n">IsValidEmailAddressFormat</span><span class="p">(</span><span class="n">FString</span> <span class="n">String</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_53" class="discrete">Parameters</h4>
+<h4 id="_parameters_56" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -5173,7 +5452,7 @@ <h3 id="Filesize_ToString">ToString (Filesize)</h3>
 <pre class="rouge highlight"><code data-lang="c++"><span class="n">FText</span> <span class="n">Filesize_ToString</span><span class="p">(</span><span class="n">int64</span> <span class="n">FileSize</span><span class="p">,</span> <span class="n">int32</span> <span class="n">MaxDecimals</span><span class="p">,</span> <span class="n">TEnumAsByte</span><span class="o">&lt;</span><span class="n">EFileSizeUnit</span><span class="o">&gt;</span> <span class="n">Unit</span><span class="p">)</span></code></pre>
 </div>
 </div>
-<h4 id="_parameters_54" class="discrete">Parameters</h4>
+<h4 id="_parameters_57" class="discrete">Parameters</h4>
 <table class="tableblock frame-none grid-all stripes-odd stretch stretch">
 <colgroup>
 <col style="width: 25%;">
@@ -5330,6 +5609,10 @@ <h4 id="_values_4" class="discrete">Values</h4>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">Updated</span></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">Mod uninstallation from local storage</p></td>
 </tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><span class="variablename">Uploaded</span></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Mod local installation updated to latest version</p></td>
+</tr>
 </tbody>
 </table>
 <hr>
@@ -5932,7 +6215,7 @@ <h4 id="_values_20" class="discrete">Values</h4>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2021-10-21 16:45:34 +1100
+Last updated 2021-11-11 11:53:04 +1100
 </div>
 </div>
 </body>
diff --git a/Doc/img/nd_img_K2_GetModCreationHandle.png b/Doc/img/nd_img_K2_GetModCreationHandle.png
new file mode 100644
index 00000000..64aa1302
Binary files /dev/null and b/Doc/img/nd_img_K2_GetModCreationHandle.png differ
diff --git a/Doc/img/nd_img_K2_SubmitNewModAsync.png b/Doc/img/nd_img_K2_SubmitNewModAsync.png
new file mode 100644
index 00000000..cccd75a3
Binary files /dev/null and b/Doc/img/nd_img_K2_SubmitNewModAsync.png differ
diff --git a/Doc/img/nd_img_K2_SubmitNewModFileForMod.png b/Doc/img/nd_img_K2_SubmitNewModFileForMod.png
new file mode 100644
index 00000000..a5f52e83
Binary files /dev/null and b/Doc/img/nd_img_K2_SubmitNewModFileForMod.png differ
diff --git a/Source/Modio/GeneratedSource/ArchiveFileImplementation.cpp b/Source/Modio/GeneratedSource/ArchiveFileImplementation.cpp
index 9e35edba..08f4e74d 100644
--- a/Source/Modio/GeneratedSource/ArchiveFileImplementation.cpp
+++ b/Source/Modio/GeneratedSource/ArchiveFileImplementation.cpp
@@ -1,31 +1,32 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io SDK.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-sdk/blob/main/LICENSE>)
- *  
+ *
  */
 
 #ifdef MODIO_SEPARATE_COMPILATION
-#include "modio/detail/compression/zip/ArchiveFileImplementation.h"
+	#include "modio/detail/compression/zip/ArchiveFileImplementation.h"
 #endif
 
 namespace Modio
 {
 	namespace Detail
 	{
-
-void ArchiveFileImplementation::AddEntry(ArchiveEntry Entry)
+		void ArchiveFileImplementation::AddEntry(ArchiveEntry Entry)
 		{
 			ArchiveEntries.push_back(Entry);
 		}
 
-void ArchiveFileImplementation::AddEntry(std::string FileName, std::uintmax_t FileOffset,
-												 std::uintmax_t CompressedSize, CompressionMethod Compression)
+		void ArchiveFileImplementation::AddEntry(std::string FileName, std::uintmax_t FileOffset,
+												 std::uintmax_t CompressedSize, std::uintmax_t UncompressedSize,
+												 CompressionMethod Compression, std::uint32_t CRCValue, bool bIsDirectory)
 		{
-			ArchiveEntries.push_back(ArchiveEntry {Compression, FileName, FileOffset, CompressedSize});
+			ArchiveEntries.push_back(
+				ArchiveEntry {Compression, FileName, FileOffset, CompressedSize, UncompressedSize, CRCValue, bIsDirectory});
 		}
 
 		std::uintmax_t ArchiveFileImplementation::GetNumberOfEntries()
@@ -44,5 +45,4 @@ void ArchiveFileImplementation::AddEntry(std::string FileName, std::uintmax_t Fi
 		}
 
 	} // namespace Detail
-}
-
+} // namespace Modio
diff --git a/Source/Modio/GeneratedSource/ModioFilterParams.cpp b/Source/Modio/GeneratedSource/ModioFilterParams.cpp
index c22103ae..245cd93c 100644
--- a/Source/Modio/GeneratedSource/ModioFilterParams.cpp
+++ b/Source/Modio/GeneratedSource/ModioFilterParams.cpp
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io SDK.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-sdk/blob/main/LICENSE>)
- *  
+ *
  */
 
 #ifdef MODIO_SEPARATE_COMPILATION
@@ -72,8 +72,7 @@ namespace Modio
 
 	Modio::FilterParams& FilterParams::WithTags(std::vector<std::string> NewTags)
 	{
-		Tags.clear();
-		Tags.insert(Tags.end(), NewTags.begin(), NewTags.end());
+		Tags = std::move(NewTags);
 		return *this;
 	}
 
@@ -86,8 +85,7 @@ namespace Modio
 
 	Modio::FilterParams& FilterParams::WithoutTags(std::vector<std::string> NewTags)
 	{
-		ExcludedTags.clear();
-		ExcludedTags.insert(Tags.end(), NewTags.begin(), NewTags.end());
+		ExcludedTags = std::move(NewTags);
 		return *this;
 	}
 
@@ -98,6 +96,12 @@ namespace Modio
 		return *this;
 	}
 
+	Modio::FilterParams& Modio::FilterParams::MetadataLike(std::string SearchString)
+	{
+		MetadataBlobSearchString = SearchString;
+		return *this;
+	}
+
 	Modio::FilterParams& FilterParams::IndexedResults(std::size_t StartIndex, std::size_t ResultCount)
 	{
 		IsPaged = false;
@@ -192,7 +196,7 @@ namespace Modio
 			std::string TagStr;
 			for (std::string Tag : Tags)
 			{
-				TagStr += Tag + " ";
+				TagStr += Tag + ",";
 			}
 			TagStr.resize(TagStr.size() - 1);
 			FilterFields.push_back(fmt::format("tags={}", TagStr));
@@ -203,12 +207,17 @@ namespace Modio
 			std::string ExcludedTagStr;
 			for (std::string Tag : ExcludedTags)
 			{
-				ExcludedTagStr += Tag + " ";
+				ExcludedTagStr += Tag + ",";
 			}
 			ExcludedTagStr.resize(ExcludedTagStr.size() - 1);
 			FilterFields.push_back(fmt::format("tags-not-in={}", ExcludedTagStr));
 		}
 
+		if (MetadataBlobSearchString)
+		{
+			FilterFields.push_back(fmt::format("metadata_blob-lk=*{}*", *MetadataBlobSearchString));
+		}
+
 		std::string ResultLimitStr;
 		if (IsPaged)
 		{
diff --git a/Source/Modio/GeneratedSource/ModioHttpParams.cpp b/Source/Modio/GeneratedSource/ModioHttpParams.cpp
index 6676286e..9c9dba11 100644
--- a/Source/Modio/GeneratedSource/ModioHttpParams.cpp
+++ b/Source/Modio/GeneratedSource/ModioHttpParams.cpp
@@ -1,16 +1,18 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io SDK.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-sdk/blob/main/LICENSE>)
- *  
+ *
  */
 
 #ifdef MODIO_SEPARATE_COMPILATION
 	#include "modio/http/ModioHttpParams.h"
 #endif
+
+#include "modio/core/ModioLogger.h"
 #include "modio/detail/FmtWrapper.h"
 #include "modio/detail/ModioSDKSessionData.h"
 
@@ -18,6 +20,35 @@ namespace Modio
 {
 	namespace Detail
 	{
+		/// @brief Helper to construct payload content from a raw buffer
+		/// @param RawBuffer The buffer to submit
+		/// @return PayloadContent wrapping the buffer
+		MODIO_IMPL PayloadContent MakePayloadContent(Modio::Detail::Buffer RawBuffer)
+		{
+			return PayloadContent(std::move(RawBuffer));
+		}
+
+		/// @brief Helper to construct payload content referencing a file
+		/// @param PathToFile The path to the file that will be submitted
+		/// @return Optional payload content. Will be empty if the file doesn't exist or we could otherwise not retrieve
+		/// the file size
+		MODIO_IMPL Modio::Optional<PayloadContent> MakePayloadContent(Modio::filesystem::path PathToFile)
+		{
+			Modio::ErrorCode ec;
+			std::uintmax_t TmpSize = Modio::filesystem::file_size(PathToFile, ec);
+			if (!ec)
+			{
+				return PayloadContent(PathToFile, Modio::FileSize(TmpSize));
+			}
+			else
+			{
+				Modio::Detail::Logger().Log(Modio::LogLevel::Error, Modio::LogCategory::File,
+											"Could not get size for file payload at {}, got error  = {}",
+											PathToFile.generic_string(), ec.message());
+				return {};
+			}
+		}
+
 		Modio::Detail::HttpRequestParams& HttpRequestParams::SetGameID(Modio::GameID ID)
 		{
 			this->GameID = ID;
@@ -31,13 +62,13 @@ namespace Modio
 			return NewParamsInstance;
 		}
 
-		Modio::Detail::HttpRequestParams& HttpRequestParams::SetModID(std::uint32_t ID)
+		Modio::Detail::HttpRequestParams& HttpRequestParams::SetModID(Modio::ModID ID)
 		{
 			ModID = ID;
 			return *this;
 		}
 
-		Modio::Detail::HttpRequestParams HttpRequestParams::SetModID(std::uint32_t ID) const
+		Modio::Detail::HttpRequestParams HttpRequestParams::SetModID(Modio::ModID ID) const
 		{
 			auto NewParamsInstance = HttpRequestParams(*this);
 			NewParamsInstance.ModID = ID;
@@ -69,24 +100,49 @@ namespace Modio
 			return *this;
 		}
 
-		Modio::Detail::HttpRequestParams HttpRequestParams::SetFilterString(const std::string& InFilterString) const
+		HttpRequestParams HttpRequestParams::SetFilterString(const std::string& InFilterString) const
 		{
 			auto NewParamsInstance = HttpRequestParams(*this);
 			NewParamsInstance.SetFilterString(InFilterString);
 			return NewParamsInstance;
 		}
 
-		Modio::Detail::HttpRequestParams HttpRequestParams::AppendPayloadValue(std::string Key, std::string Value) const
+		HttpRequestParams HttpRequestParams::AppendPayloadValue(std::string Key, std::string Value) const
 		{
-			auto NewParamsInstance = HttpRequestParams(*this);
-			if (NewParamsInstance.Payload.has_value())
+			Modio::Detail::Buffer ValueBuffer(Value.length());
+			std::copy(Value.begin(), Value.end(), ValueBuffer.begin());
+			return AppendPayloadValue(Key, std::move(ValueBuffer));
+		}
+
+		HttpRequestParams HttpRequestParams::AppendPayloadValue(std::string Key,
+																Modio::Detail::Buffer RawPayloadBuffer) const
+		{
+			HttpRequestParams NewParamsInstance = HttpRequestParams(*this);
+			auto KeyIterator = NewParamsInstance.PayloadMembers.find(Key);
+			if (KeyIterator != NewParamsInstance.PayloadMembers.end())
 			{
-				*NewParamsInstance.Payload += "&" + Key + "=" + Value;
+				NewParamsInstance.PayloadMembers.erase(KeyIterator);
 			}
-			else
+			NewParamsInstance.PayloadMembers.emplace(Key, MakePayloadContent(std::move(RawPayloadBuffer)));
+			return NewParamsInstance;
+		}
+
+		HttpRequestParams HttpRequestParams::AppendPayloadFile(std::string Key,
+															   Modio::filesystem::path PathToFileToUpload) const
+		{
+			HttpRequestParams NewParamsInstance = HttpRequestParams(*this);
+			Modio::Optional<PayloadContent> MaybePayload = MakePayloadContent(PathToFileToUpload);
+			if (MaybePayload)
 			{
-				NewParamsInstance.Payload = Key + "=" + Value;
+				auto KeyIterator = NewParamsInstance.PayloadMembers.find(Key);
+				if (KeyIterator != NewParamsInstance.PayloadMembers.end())
+				{
+					NewParamsInstance.PayloadMembers.erase(KeyIterator);
+				}
+				NewParamsInstance.PayloadMembers.emplace(Key, MaybePayload.value());
 			}
+			// Warning about null payload file will be emitted by MakePayloadContent, so we don't need to do it again
+			// here
 			return NewParamsInstance;
 		}
 
@@ -178,9 +234,106 @@ namespace Modio
 			return CurrentOperationType;
 		}
 
-		const Modio::Optional<std::string>& HttpRequestParams::GetPayload() const
+		bool HttpRequestParams::ContainsFormData() const
+		{
+			if (ContentType)
+			{
+				if (Modio::Detail::hash_64_fnv1a_const(ContentType->c_str()) == "multipart/form-data"_hash)
+				{
+					return true;
+				}
+			}
+			return false;
+		}
+
+		const Modio::Optional<std::string> HttpRequestParams::GetUrlEncodedPayload() const
+		{
+			// TODO: make this more performant by treating the mime type as a constant so we can do a early exit if we
+			// are using form-data
+			if (Modio::Detail::hash_64_fnv1a_const(ContentType->c_str()) != "application/x-www-form-urlencoded"_hash)
+			{
+				return {};
+			}
+			std::string PayloadString;
+			for (auto& Entry : PayloadMembers)
+			{
+				if (Entry.second.RawBuffer)
+				{
+					if (PayloadString.length())
+					{
+						PayloadString += "&";
+					}
+					PayloadString +=
+						Entry.first + "=" + std::string(Entry.second.RawBuffer->begin(), Entry.second.RawBuffer->end());
+				}
+				else
+				{
+					// Notify the caller we're rejecting the call for a url encoded payload
+					Modio::Detail::Logger().Log(
+						Modio::LogLevel::Error, Modio::LogCategory::Http,
+						"Rejecting request for URLencoded payload because at least one payload parameter is a file {}",
+						Entry.second.PathToFile.value_or("").u8string());
+
+					return {};
+				}
+			}
+			if (PayloadString.length())
+			{
+				return PayloadString;
+			}
+			else
+			{
+				return {};
+			}
+		}
+
+		Modio::FileSize HttpRequestParams::GetPayloadSize() const
+		{
+			if (PayloadMembers.size() == 0)
+			{
+				return Modio::FileSize(0);
+			}
+			else
+			{
+				const std::string BoundaryString =
+					fmt::format("\r\n--{}\r\nContent-Disposition: form-data; name=\"\"\r\n\r\n", GetBoundaryHash());
+				Modio::FileSize PayloadSize = Modio::FileSize(0);
+				for (auto& ContentElement : PayloadMembers)
+				{
+					// Length of the name
+					PayloadSize += Modio::FileSize(ContentElement.first.size());
+					// Length of the data
+					PayloadSize += ContentElement.second.Size;
+					if (ContentElement.second.bIsFile)
+					{
+						PayloadSize += Modio::FileSize(
+							fmt::format("; filename=\"{}\"", ContentElement.second.PathToFile->filename().u8string()).size());
+					}
+					// Length of the boundary string
+					PayloadSize += Modio::FileSize(BoundaryString.size());
+				}
+				// Add final boundary string
+				const std::string FinalBoundaryString = fmt::format("\r\n--{}\r\n", GetBoundaryHash());
+				PayloadSize += Modio::FileSize(FinalBoundaryString.size());
+				return PayloadSize;
+			}
+		}
+
+		Modio::Optional<std::pair<std::string, Modio::Detail::PayloadContent>> HttpRequestParams::
+			TakeNextPayloadElement()
 		{
-			return Payload;
+			if (PayloadMembers.size())
+			{
+				auto FirstElementIt = PayloadMembers.begin();
+				Modio::Optional<std::pair<std::string, Modio::Detail::PayloadContent>> FirstElement =
+					std::move(*FirstElementIt);
+				PayloadMembers.erase(FirstElementIt);
+				return FirstElement;
+			}
+			else
+			{
+				return {};
+			}
 		}
 
 		Modio::Detail::HttpRequestParams::HeaderList HttpRequestParams::GetHeaders() const
@@ -222,10 +375,22 @@ namespace Modio
 					break;
 			}
 
-			if (Payload || CurrentOperationType == Modio::Detail::Verb::POST ||
+			/*if (Payload || CurrentOperationType == Modio::Detail::Verb::POST ||
 				CurrentOperationType == Modio::Detail::Verb::DELETE)
 			{
 				Headers.push_back({"Content-Type", "application/x-www-form-urlencoded"});
+			}*/
+			if (ContentType.has_value())
+			{
+				if (ContainsFormData())
+				{
+					Headers.push_back(
+						{"Content-Type", fmt::format("{}; boundary=\"{}\"", *ContentType, GetBoundaryHash())});
+				}
+				else
+				{
+					Headers.push_back({"Content-Type", *ContentType});
+				}
 			}
 
 			const Modio::Optional<std::string>& AuthToken = GetAuthToken();
@@ -235,8 +400,9 @@ namespace Modio
 			}
 			if (StartOffset || EndOffset)
 			{
-				Headers.push_back({"Range", fmt::format("bytes={}-{}", StartOffset ? StartOffset.value() : (std::uintmax_t) 0,
-														EndOffset ? fmt::format("{}", EndOffset.value()) : "")});
+				Headers.push_back(
+					{"Range", fmt::format("bytes={}-{}", StartOffset ? StartOffset.value() : (std::uintmax_t) 0,
+										  EndOffset ? fmt::format("{}", EndOffset.value()) : "")});
 			}
 			if (OverrideLocale)
 			{
@@ -264,7 +430,7 @@ namespace Modio
 			{
 				HeaderString += fmt::format("{0}: {1}\r\n", CurrentHeader.first, CurrentHeader.second);
 			}
-			auto CurrentPayloadString = GetPayload();
+			auto CurrentPayloadString = GetUrlEncodedPayload();
 			if (CurrentPayloadString.has_value())
 			{
 				if (bPerformURLEncoding)
@@ -359,5 +525,67 @@ namespace Modio
 #ifdef MODIO_SEPARATE_COMPILATION
 		HttpRequestParams InvalidParams;
 #endif
+
+		PayloadContent::PayloadContent(const PayloadContent& Other)
+
+		{
+			if (Other.bIsFile)
+			{
+				RawBuffer = {};
+				PathToFile = Other.PathToFile;
+			}
+			else
+			{
+				RawBuffer = Other.RawBuffer.value().Clone();
+				PathToFile = {};
+			}
+			bIsFile = Other.bIsFile;
+			Size = Other.Size;
+		}
+
+		PayloadContent::PayloadContent(Modio::Detail::Buffer InRawBuffer)
+			: RawBuffer(std::move(InRawBuffer)),
+			  bIsFile(false)
+		{
+			Size = Modio::FileSize(this->RawBuffer->GetSize());
+		}
+
+		PayloadContent::PayloadContent(Modio::filesystem::path PathToFile, Modio::FileSize Size)
+			: PathToFile(PathToFile),
+			  bIsFile(true),
+			  Size(Size)
+		{}
+
+		Modio::Detail::PayloadContent& PayloadContent::operator=(PayloadContent&& Other)
+		{
+			bIsFile = std::move(Other.bIsFile);
+			RawBuffer = std::move(Other.RawBuffer);
+			PathToFile = std::move(Other.PathToFile);
+			Size = std::move(Other.Size);
+			return *this;
+		}
+
+		PayloadContent& PayloadContent::operator=(const PayloadContent& Other)
+		{
+			if (this == &Other)
+			{
+				return *this;
+			}
+
+			if (Other.bIsFile)
+			{
+				RawBuffer = {};
+				PathToFile = Other.PathToFile;
+			}
+			else
+			{
+				RawBuffer = Other.RawBuffer.value().Clone();
+				PathToFile = {};
+			}
+			bIsFile = Other.bIsFile;
+			Size = Other.Size;
+			return *this;
+		}
+
 	} // namespace Detail
 } // namespace Modio
diff --git a/Source/Modio/GeneratedSource/ModioSDKSessionData.cpp b/Source/Modio/GeneratedSource/ModioSDKSessionData.cpp
index e319d087..5cdb3aa9 100644
--- a/Source/Modio/GeneratedSource/ModioSDKSessionData.cpp
+++ b/Source/Modio/GeneratedSource/ModioSDKSessionData.cpp
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io SDK.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-sdk/blob/main/LICENSE>)
- *  
+ *
  */
 
 #ifdef MODIO_SEPARATE_COMPILATION
@@ -14,6 +14,7 @@
 
 #include "modio/core/ModioBuffer.h"
 #include "modio/core/ModioInitializeOptions.h"
+#include "modio/core/ModioLogger.h"
 
 namespace Modio
 
@@ -26,7 +27,7 @@ namespace Modio
 			return Instance;
 		}
 
-		MODIO_IMPL  bool SDKSessionData::Initialize(const Modio::InitializeOptions& Options)
+		MODIO_IMPL bool SDKSessionData::Initialize(const Modio::InitializeOptions& Options)
 		{
 			// If we are already initializing or done with init, bail
 			if (Get().CurrentInitializationState != InitializationState::NotInitialized)
@@ -73,7 +74,7 @@ namespace Modio
 			return Get().Environment;
 		}
 
-		Modio::Portal SDKSessionData::GetPortal() 
+		Modio::Portal SDKSessionData::GetPortal()
 		{
 			return Get().PortalInUse;
 		}
@@ -192,7 +193,6 @@ namespace Modio
 			return Get().UserData.UserModDirectoryOverride;
 		}
 
-
 		void SDKSessionData::SetUserModManagementCallback(std::function<void(Modio::ModManagementEvent)> Callback)
 		{
 			Get().ModManagementEventCallback = Callback;
@@ -214,22 +214,58 @@ namespace Modio
 			return Get().EventLog;
 		}
 
-		void SDKSessionData::SetLastValidationError(std::vector<FieldError> ExtendedErrorInformation) 
+		void SDKSessionData::SetLastValidationError(std::vector<FieldError> ExtendedErrorInformation)
 		{
 			Get().LastValidationError = ExtendedErrorInformation;
 		}
-		
 
-		std::vector<FieldError> SDKSessionData::GetLastValidationError() 
+		std::vector<FieldError> SDKSessionData::GetLastValidationError()
 		{
 			return Get().LastValidationError;
 		}
 
-		void SDKSessionData::ClearLastValidationError() 
+		void SDKSessionData::ClearLastValidationError()
 		{
 			Get().LastValidationError.clear();
 		}
 
+		void SDKSessionData::AddPendingModfileUpload(Modio::ModID ID, Modio::CreateModFileParams Params)
+		{
+			if (Params.RootDirectory.has_filename())
+			{
+				Params.RootDirectory /= "";
+				Modio::Detail::Logger().Log(
+					Modio::LogLevel::Warning, Modio::LogCategory::ModManagement,
+					"Modfile directory path {} does not end in a path separator. Adding manually");
+			}
+
+			auto ExistingEntry = Get().PendingModUploads.find(ID);
+			if (ExistingEntry != Get().PendingModUploads.end())
+			{
+				Modio::Detail::Logger().Log(Modio::LogLevel::Warning, Modio::LogCategory::ModManagement,
+											"New modfile upload queued for mod {} which already had a pending upload. "
+											"Dropping previous modfile upload request.",
+											ID);
+				Get().PendingModUploads.erase(ID);
+			}
+			Get().PendingModUploads.insert({ID, Params});
+		}
+
+		Modio::Optional<std::pair<Modio::ModID, Modio::CreateModFileParams>> SDKSessionData::
+			GetNextPendingModfileUpload()
+		{
+			if (Get().PendingModUploads.size())
+			{
+				std::pair<Modio::ModID, Modio::CreateModFileParams> PendingUpload = *Get().PendingModUploads.begin();
+				Get().PendingModUploads.erase(Get().PendingModUploads.begin());
+				return PendingUpload;
+			}
+			else
+			{
+				return {};
+			}
+		}
+
 		std::weak_ptr<Modio::ModProgressInfo> SDKSessionData::StartModDownloadOrUpdate(Modio::ModID ID)
 		{
 			if (Get().CurrentModInProgress != nullptr)
@@ -273,6 +309,38 @@ namespace Modio
 			}
 		}
 
+		Modio::ModCreationHandle SDKSessionData::GetNextModCreationHandle()
+		{
+			if (Get().CreationHandles.size())
+			{
+				Modio::ModCreationHandle NextHandle = Get().CreationHandles.rbegin()->first;
+				NextHandle += Modio::ModCreationHandle(1);
+				Get().CreationHandles.insert({NextHandle, {}});
+				return NextHandle;
+			}
+			else
+			{
+				Modio::ModCreationHandle NextHandle = Modio::ModCreationHandle(0);
+				Get().CreationHandles.insert({NextHandle, {}});
+				return NextHandle;
+			}
+		}
+
+		Modio::Optional<Modio::ModID> SDKSessionData::ResolveModCreationHandle(Modio::ModCreationHandle Handle)
+		{
+			return Get().CreationHandles.at(Handle);
+		}
+
+		void SDKSessionData::LinkModCreationHandle(Modio::ModCreationHandle Handle, Modio::ModID ID)
+		{
+			if (Get().CreationHandles.find(Handle) != Get().CreationHandles.end())
+			{
+				Modio::Detail::Logger().Log(Modio::LogLevel::Warning, Modio::LogCategory::ModManagement,
+											"Attempting to relink handle {} to mod id {}", Handle, ID);
+			}
+			Get().CreationHandles.insert({Handle, ID});
+		}
+
 		SDKSessionData::SDKSessionData() {}
 
 		SDKSessionData::SDKSessionData(const Modio::InitializeOptions& Options)
diff --git a/Source/Modio/GeneratedSource/SDKModManagement.cpp b/Source/Modio/GeneratedSource/SDKModManagement.cpp
index dcbb3565..825823d9 100644
--- a/Source/Modio/GeneratedSource/SDKModManagement.cpp
+++ b/Source/Modio/GeneratedSource/SDKModManagement.cpp
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io SDK.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-sdk/blob/main/LICENSE>)
- *  
+ *
  */
 
 #pragma once
@@ -22,6 +22,8 @@
 #include "modio/detail/ops/ModManagementLoop.h"
 #include "modio/detail/ops/SubscribeToModOp.h"
 #include "modio/detail/ops/UnsubscribeFromMod.h"
+#include "modio/detail/ops/mod/SubmitNewModFileOp.h"
+#include "modio/detail/ops/mod/SubmitNewModOp.h"
 #include "modio/detail/ops/modmanagement/ForceUninstallModOp.h"
 #include "modio/impl/SDKPreconditionChecks.h"
 #include "modio/userdata/ModioUserDataService.h"
@@ -180,4 +182,36 @@ namespace Modio
 		}
 	}
 
+	void SubmitNewModAsync(Modio::ModCreationHandle Handle, Modio::CreateModParams Params,
+						   std::function<void(Modio::ErrorCode, Modio::Optional<Modio::ModID> CreatedModID)> Callback)
+	{
+		if (Modio::Detail::RequireSDKIsInitialized(Callback) && Modio::Detail::RequireUserIsAuthenticated(Callback))
+		{
+			if (Modio::Optional<Modio::ModID> ResolvedID =
+					Modio::Detail::SDKSessionData::ResolveModCreationHandle(Handle))
+			{
+				Modio::Detail::Logger().Log(
+					Modio::LogLevel::Warning, Modio::LogCategory::ModManagement,
+					"Attempted to call SubmitNewModAsync with an already-used handle. Returning existing Mod ID");
+				asio::post(Modio::Detail::Services::GetGlobalContext().get_executor(),
+						   [ID = ResolvedID.value(), Callback]() { Callback({}, ID); });
+				return;
+			}
+			return Modio::Detail::SubmitNewModAsync(Handle, Params, Callback);
+		}
+	}
+	Modio::ModCreationHandle GetModCreationHandle()
+	{
+		return Modio::Detail::SDKSessionData::GetNextModCreationHandle();
+	}
+
+	MODIOSDK_API void SubmitNewModFileForMod(Modio::ModID Mod, Modio::CreateModFileParams Params)
+	{
+		//TODO: @modio-core we should return the error code from this function so we can do our precondition checks
+		Modio::Detail::SDKSessionData::AddPendingModfileUpload(Mod, Params);
+
+		//(Modio::Detail::RequireSDKIsInitialized(Callback) && Modio::Detail::RequireUserIsAuthenticated(Callback)) && RequireModManagementEnabled
+		
+	}
+
 } // namespace Modio
diff --git a/Source/Modio/GeneratedSource/deflate_stream.cpp b/Source/Modio/GeneratedSource/deflate_stream.cpp
index ebdf0491..5a0d175b 100644
--- a/Source/Modio/GeneratedSource/deflate_stream.cpp
+++ b/Source/Modio/GeneratedSource/deflate_stream.cpp
@@ -8,7 +8,6 @@
  *  
  */
 
-#if(0) //We don't currently create archives, this will be re-enabled later
 //
 // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
 //
@@ -48,20 +47,15 @@
 #ifndef BOOST_BEAST_ZLIB_DETAIL_DEFLATE_STREAM_IPP
 #define BOOST_BEAST_ZLIB_DETAIL_DEFLATE_STREAM_IPP
 
-#include <boost/beast/zlib/detail/deflate_stream.hpp>
-#include <boost/beast/zlib/detail/ranges.hpp>
-#include <boost/beast/core/detail/type_traits.hpp>
-#include <boost/assert.hpp>
-#include <boost/config.hpp>
-#include <boost/make_unique.hpp>
-#include <boost/optional.hpp>
-#include <boost/throw_exception.hpp>
-#include <cstdint>
-#include <cstdlib>
-#include <cstring>
+#ifdef MODIO_SEPARATE_COMPILATION
+#include "modio/detail/compression/zlib/deflate_stream.hpp"
+#endif
+
+#include "modio/detail/compression/zlib/detail/ranges.hpp"
+
 #include <memory>
 #include <stdexcept>
-#include <type_traits>
+#include <cassert>
 
 namespace boost {
 namespace beast {
@@ -142,7 +136,7 @@ gen_codes(ct_data *tree, int max_code, std::uint16_t *bl_count)
     }
     // Check that the bit counts in bl_count are consistent.
     // The last code must be all ones.
-    BOOST_ASSERT(code + bl_count[maxBits]-1 == (1<<maxBits)-1);
+    assert(code + bl_count[maxBits]-1 == (1<<maxBits)-1);
     for(n = 0; n <= max_code; n++)
     {
         int len = tree[n].dl;
@@ -174,7 +168,7 @@ deflate_stream::get_lut() ->
                 for(unsigned n = 0; n < run; ++n)
                     tables.length_code[length++] = code;
             }
-            BOOST_ASSERT(length == 0);
+            assert(length == 0);
             // Note that the length 255 (match length 258) can be represented
             // in two different ways: code 284 + 5 bits or code 285, so we
             // overwrite length_code[255] to use the best encoding:
@@ -191,7 +185,7 @@ deflate_stream::get_lut() ->
                     for(unsigned n = 0; n < run; ++n)
                         tables.dist_code[dist++] = code;
                 }
-                BOOST_ASSERT(dist == 256);
+                assert(dist == 256);
                 // from now on, all distances are divided by 128
                 dist >>= 7;
                 for(; code < dCodes; ++code)
@@ -201,7 +195,7 @@ deflate_stream::get_lut() ->
                     for(std::size_t n = 0; n < run; ++n)
                         tables.dist_code[256 + dist++] = code;
                 }
-                BOOST_ASSERT(dist == 256);
+                assert(dist == 256);
             }
 
             // Construct the codes of the static literal tree
@@ -253,15 +247,15 @@ doReset(
         windowBits = 9;
 
     if(level < 0 || level > 9)
-        BOOST_THROW_EXCEPTION(std::invalid_argument{
+        throw(std::invalid_argument{
             "invalid level"});
 
     if(windowBits < 8 || windowBits > 15)
-        BOOST_THROW_EXCEPTION(std::invalid_argument{
+        throw(std::invalid_argument{
             "invalid windowBits"});
 
     if(memLevel < 1 || memLevel > max_mem_level)
-        BOOST_THROW_EXCEPTION(std::invalid_argument{
+        throw(std::invalid_argument{
             "invalid memLevel"});
 
     w_bits_ = windowBits;
@@ -330,7 +324,7 @@ doTune(
 
 void
 deflate_stream::
-doParams(z_params& zs, int level, Strategy strategy, error_code& ec)
+doParams(z_params& zs, int level, Strategy strategy, Modio::ErrorCode& ec)
 {
     compress_func func;
 
@@ -338,7 +332,7 @@ doParams(z_params& zs, int level, Strategy strategy, error_code& ec)
         level = 6;
     if(level < 0 || level > 9)
     {
-        ec = error::stream_error;
+        ec = Modio::make_error_code(Modio::ZlibError::StreamError);
         return;
     }
     func = get_config(level_).func;
@@ -348,7 +342,7 @@ doParams(z_params& zs, int level, Strategy strategy, error_code& ec)
     {
         // Flush the last buffer:
         doWrite(zs, Flush::block, ec);
-        if(ec == error::need_buffers && pending_ == 0)
+        if(ec == Modio::ZlibError::NeedBuffers && pending_ == 0)
             ec = {};
     }
     if(level_ != level)
@@ -362,32 +356,31 @@ doParams(z_params& zs, int level, Strategy strategy, error_code& ec)
     strategy_ = strategy;
 }
 
-// VFALCO boost::optional param is a workaround for
+// VFALCO Modio::Optional param is a workaround for
 //        gcc "maybe uninitialized" warning
 //        https://github.com/boostorg/beast/issues/532
 //
 void
 deflate_stream::
-doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
+doWrite(z_params& zs, Modio::Optional<Flush> flush, Modio::ErrorCode& ec)
 {
     maybe_init();
 
     if(zs.next_out == 0 || (zs.next_in == 0 && zs.avail_in != 0) ||
         (status_ == FINISH_STATE && flush != Flush::finish))
     {
-        ec = error::stream_error;
+        ec = Modio::make_error_code(Modio::ZlibError::StreamError);
         return;
     }
     if(zs.avail_out == 0)
     {
-        ec = error::need_buffers;
+        ec = Modio::make_error_code(Modio::ZlibError::NeedBuffers);
         return;
     }
 
     // value of flush param for previous deflate call
-    auto old_flush = boost::make_optional<Flush>(
-        last_flush_.is_initialized(),
-        last_flush_ ? *last_flush_ : Flush::none);
+	auto old_flush = Modio::Optional<Flush> {
+        last_flush_ ? *last_flush_ : Flush::none};
 
     last_flush_ = flush;
 
@@ -403,7 +396,7 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
              * but this is not an error situation so make sure we
              * return OK instead of BUF_ERROR at next call of deflate:
              */
-            last_flush_ = boost::none;
+            last_flush_ = boost::beast::zlib::Flush::none;
             return;
         }
     }
@@ -415,14 +408,14 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
          * flushes. For repeated and useless calls with Flush::finish, we keep
          * returning Z_STREAM_END instead of Z_BUF_ERROR.
          */
-        ec = error::need_buffers;
+        ec = Modio::make_error_code(Modio::ZlibError::NeedBuffers);
         return;
     }
 
     // User must not provide more input after the first FINISH:
     if(status_ == FINISH_STATE && zs.avail_in != 0)
     {
-        ec = error::need_buffers;
+        ec = Modio::make_error_code(Modio::ZlibError::NeedBuffers);
         return;
     }
 
@@ -436,14 +429,14 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
         switch(strategy_)
         {
         case Strategy::huffman:
-            bstate = deflate_huff(zs, flush.get());
+            bstate = deflate_huff(zs, flush.value());
             break;
         case Strategy::rle:
-            bstate = deflate_rle(zs, flush.get());
+            bstate = deflate_rle(zs, flush.value());
             break;
         default:
         {
-            bstate = (this->*(get_config(level_).func))(zs, flush.get());
+            bstate = (this->*(get_config(level_).func))(zs, flush.value());
             break;
         }
         }
@@ -456,7 +449,7 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
         {
             if(zs.avail_out == 0)
             {
-                last_flush_ = boost::none; /* avoid BUF_ERROR next call, see above */
+                last_flush_ = boost::beast::zlib::Flush::none; /* avoid BUF_ERROR next call, see above */
             }
             return;
             /*  If flush != Flush::none && avail_out == 0, the next call
@@ -494,7 +487,7 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
             flush_pending(zs);
             if(zs.avail_out == 0)
             {
-                last_flush_ = boost::none; /* avoid BUF_ERROR at next call, see above */
+                last_flush_ = boost::beast::zlib::Flush::none; /* avoid BUF_ERROR at next call, see above */
                 return;
             }
         }
@@ -502,7 +495,7 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
 
     if(flush == Flush::finish)
     {
-        ec = error::end_of_stream;
+        ec = Modio::make_error_code(Modio::ZlibError::EndOfStream);
         return;
     }
 }
@@ -510,11 +503,11 @@ doWrite(z_params& zs, boost::optional<Flush> flush, error_code& ec)
 // VFALCO Warning: untested
 void
 deflate_stream::
-doDictionary(Byte const* dict, uInt dictLength, error_code& ec)
+doDictionary(Byte const* dict, uInt dictLength, Modio::ErrorCode& ec)
 {
     if(lookahead_)
     {
-        ec = error::stream_error;
+        ec = Modio::make_error_code(Modio::ZlibError::StreamError);
         return;
     }
 
@@ -564,13 +557,13 @@ doDictionary(Byte const* dict, uInt dictLength, error_code& ec)
 
 void
 deflate_stream::
-doPrime(int bits, int value, error_code& ec)
+doPrime(int bits, int value, Modio::ErrorCode& ec)
 {
     maybe_init();
 
     if((Byte *)(d_buf_) < pending_out_ + ((Buf_size + 7) >> 3))
     {
-        ec = error::need_buffers;
+        ec = Modio::make_error_code(Modio::ZlibError::NeedBuffers);
         return;
     }
 
@@ -627,7 +620,7 @@ init()
 
     if(! buf_ || buf_size_ != needed)
     {
-        buf_ = boost::make_unique_noinit<
+        buf_ = std::make_unique<
             std::uint8_t[]>(needed);
         buf_size_ = needed;
     }
@@ -960,7 +953,7 @@ scan_tree(
 {
     int n;                      // iterates over all tree elements
     int prevlen = -1;           // last emitted length
-    int curlen;                 // length of current code
+    int curlen = 0;                 // length of current code
     int nextlen = tree[0].dl;   // length of next code
     std::uint16_t count = 0;    // repeat count of the current code
     int max_count = 7;          // max repeat count
@@ -1064,7 +1057,7 @@ send_tree(
                 send_code(curlen, bl_tree_);
                 count--;
             }
-            BOOST_ASSERT(count >= 3 && count <= 6);
+            assert(count >= 3 && count <= 6);
             send_code(REP_3_6, bl_tree_);
             send_bits(count-3, 2);
         }
@@ -1145,8 +1138,8 @@ send_all_trees(
 {
     int rank;       // index in bl_order
 
-    BOOST_ASSERT(lcodes >= 257 && dcodes >= 1 && blcodes >= 4);
-    BOOST_ASSERT(lcodes <= lCodes && dcodes <= dCodes && blcodes <= blCodes);
+    assert(lcodes >= 257 && dcodes >= 1 && blcodes >= 4);
+    assert(lcodes <= lCodes && dcodes <= dCodes && blcodes <= blCodes);
     send_bits(lcodes-257, 5); // not +255 as stated in appnote.txt
     send_bits(dcodes-1,   5);
     send_bits(blcodes-4,  4); // not -3 as stated in appnote.txt
@@ -1193,7 +1186,7 @@ compress_block(
                 }
                 dist--; /* dist is now the match distance - 1 */
                 code = d_code(dist);
-                BOOST_ASSERT(code < dCodes);
+                assert(code < dCodes);
 
                 send_code(code, dtree);       /* send the distance code */
                 extra = lut_.extra_dbits[code];
@@ -1205,7 +1198,7 @@ compress_block(
             } /* literal or match pair ? */
 
             /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
-            BOOST_ASSERT((uInt)(pending_) < lit_bufsize_ + 2*lx);
+            assert((uInt)(pending_) < lit_bufsize_ + 2*lx);
         }
         while(lx < last_lit_);
     }
@@ -1442,7 +1435,7 @@ tr_flush_block(
         //        https://github.com/madler/zlib/issues/172
 
     #if 0
-        BOOST_ASSERT(buf);
+        assert(buf);
     #endif
         opt_lenb = static_lenb = stored_len + 5; // force a stored block
     }
@@ -1741,7 +1734,7 @@ longest_match(IPos cur_match)
     /* The code is optimized for HASH_BITS >= 8 and maxMatch-2 multiple of 16.
      * It is easy to get rid of this optimization if necessary.
      */
-    BOOST_ASSERT(hash_bits_ >= 8 && maxMatch == 258);
+    assert(hash_bits_ >= 8 && maxMatch == 258);
 
     /* Do not waste too much time if we already have a good match: */
     if(prev_length_ >= good_match_) {
@@ -1753,10 +1746,10 @@ longest_match(IPos cur_match)
     if((uInt)nice_match > lookahead_)
         nice_match = lookahead_;
 
-    BOOST_ASSERT((std::uint32_t)strstart_ <= window_size_-kMinLookahead);
+    assert((std::uint32_t)strstart_ <= window_size_-kMinLookahead);
 
     do {
-        BOOST_ASSERT(cur_match < strstart_);
+        assert(cur_match < strstart_);
         match = window_ + cur_match;
 
         /* Skip to next match if the match length cannot increase
@@ -1780,7 +1773,7 @@ longest_match(IPos cur_match)
          * the hash keys are equal and that HASH_BITS >= 8.
          */
         scan += 2, match++;
-        BOOST_ASSERT(*scan == *match);
+        assert(*scan == *match);
 
         /* We check for insufficient lookahead only every 8th comparison;
          * the 256th check will be made at strstart+258.
@@ -1794,7 +1787,7 @@ longest_match(IPos cur_match)
                 *++scan == *++match && *++scan == *++match &&
                 scan < strend);
 
-        BOOST_ASSERT(scan <= window_+(unsigned)(window_size_-1));
+        assert(scan <= window_+(unsigned)(window_size_-1));
 
         len = maxMatch - (int)(strend - scan);
         scan = strend - maxMatch;
@@ -1845,7 +1838,7 @@ f_stored(z_params& zs, Flush flush) ->
         /* Fill the window as much as possible: */
         if(lookahead_ <= 1) {
 
-            BOOST_ASSERT(strstart_ < w_size_+max_dist() ||
+            assert(strstart_ < w_size_+max_dist() ||
                    block_start_ >= (long)w_size_);
 
             fill_window(zs);
@@ -1854,7 +1847,7 @@ f_stored(z_params& zs, Flush flush) ->
 
             if(lookahead_ == 0) break; /* flush the current block */
         }
-        BOOST_ASSERT(block_start_ >= 0L);
+        assert(block_start_ >= 0L);
 
         strstart_ += lookahead_;
         lookahead_ = 0;
@@ -2132,7 +2125,7 @@ f_slow(z_params& zs, Flush flush) ->
             lookahead_--;
         }
     }
-    BOOST_ASSERT(flush != Flush::none);
+    assert(flush != Flush::none);
     if(match_available_)
     {
         tr_tally_lit(window_[strstart_-1], bflush);
@@ -2199,7 +2192,7 @@ f_rle(z_params& zs, Flush flush) ->
                 if(match_length_ > lookahead_)
                     match_length_ = lookahead_;
             }
-            BOOST_ASSERT(scan <= window_+(uInt)(window_size_-1));
+            assert(scan <= window_+(uInt)(window_size_-1));
         }
 
         /* Emit match if have run of minMatch or longer, else emit literal */
@@ -2301,4 +2294,3 @@ f_huff(z_params& zs, Flush flush) ->
 } // boost
 
 #endif
-#endif
\ No newline at end of file
diff --git a/Source/Modio/GeneratedSource/inflate_stream.cpp b/Source/Modio/GeneratedSource/inflate_stream.cpp
index cbe77b46..f5f5f8cd 100644
--- a/Source/Modio/GeneratedSource/inflate_stream.cpp
+++ b/Source/Modio/GeneratedSource/inflate_stream.cpp
@@ -47,7 +47,10 @@
 #ifndef BOOST_BEAST_ZLIB_DETAIL_INFLATE_STREAM_IPP
 #define BOOST_BEAST_ZLIB_DETAIL_INFLATE_STREAM_IPP
 
-#include "modio/compression/zlib/detail/inflate_stream.hpp"
+#ifdef MODIO_SEPARATE_COMPILATION
+#include "modio/detail/compression/zlib/detail/inflate_stream.hpp"
+#endif
+
 #include "modio/core/ModioErrorCode.h"
 #include <array>
 
diff --git a/Source/Modio/Modio.Build.cs b/Source/Modio/Modio.Build.cs
index c9cd72d5..492138f4 100644
--- a/Source/Modio/Modio.Build.cs
+++ b/Source/Modio/Modio.Build.cs
@@ -25,26 +25,31 @@ public Modio(ReadOnlyTargetRules Target) : base(Target)
         //Add stub generated header
         {
             string GeneratedHeaderPath = Path.Combine(ModuleDirectory, "GeneratedHeader");
-            //Clean the generated source directory so that we dont have any stale files in it
-            if (Directory.Exists(GeneratedHeaderPath))
+
+            // Only process generated headers if we are using the NativeSDK as a git submodule
+            if (File.Exists(Path.Combine(ModuleDirectory, "../ThirdParty/NativeSDK/.git")))
             {
-                Directory.Delete(GeneratedHeaderPath, true);
+                //Clean the generated source directory so that we dont have any stale files in it
+                if (Directory.Exists(GeneratedHeaderPath))
+                {
+                    Directory.Delete(GeneratedHeaderPath, true);
+                }
+                Directory.CreateDirectory(GeneratedHeaderPath);
+
+                Directory.CreateDirectory(Path.Combine(GeneratedHeaderPath, "Public"));
+                Directory.CreateDirectory(Path.Combine(GeneratedHeaderPath, "Private"));
+
+                //Because this file is a dummy we don't need it as a dependency
+                string GeneratedHeaderFilePath = Path.Combine(GeneratedHeaderPath, "Private", "ModioGeneratedVariables.h");
+                using (StreamWriter DummyGeneratedHeader = File.AppendText(GeneratedHeaderFilePath))
+                { };
+
+                // Silly hack/workaround until 4.26 adds ConditionalAddModuleDirectory - we may change where this lives in the native SDK later
+                string ErrorConditionLibraryPath = Path.Combine(ModuleDirectory, "../ThirdParty/NativeSDK/modio/modio/core/ModioErrorCondition.h");
+                // Add dependency on the upstream file so if it is modified we re-run and copy it again
+                ExternalDependencies.Add(ErrorConditionLibraryPath);
+                File.Copy(ErrorConditionLibraryPath, Path.Combine(GeneratedHeaderPath, "Public", "ModioErrorCondition.h"), true);
             }
-            Directory.CreateDirectory(GeneratedHeaderPath);
-
-            Directory.CreateDirectory(Path.Combine(GeneratedHeaderPath, "Public"));
-            Directory.CreateDirectory(Path.Combine(GeneratedHeaderPath, "Private"));
-
-            //Because this file is a dummy we don't need it as a dependency
-            string GeneratedHeaderFilePath = Path.Combine(GeneratedHeaderPath, "Private", "ModioGeneratedVariables.h");
-            using (StreamWriter DummyGeneratedHeader = File.AppendText(GeneratedHeaderFilePath))
-            { };
-
-            // Silly hack/workaround until 4.26 adds ConditionalAddModuleDirectory - we may change where this lives in the native SDK later
-            string ErrorConditionLibraryPath = Path.Combine(ModuleDirectory, "../ThirdParty/NativeSDK/modio/modio/core/ModioErrorCondition.h");
-            // Add dependency on the upstream file so if it is modified we re-run and copy it again
-            ExternalDependencies.Add(ErrorConditionLibraryPath);
-            File.Copy(ErrorConditionLibraryPath, Path.Combine(GeneratedHeaderPath, "Public", "ModioErrorCondition.h"), true);
 
 
             PublicIncludePaths.AddRange(new string[] {
@@ -73,6 +78,9 @@ public Modio(ReadOnlyTargetRules Target) : base(Target)
         }
         // Add native SDK implementation to this module so we don't have to create an extraneous module
         // TODO: @modio-ue4 cleanup by using UE_4_26_OR_LATER so we can use ConditionalAddModuleDirectory
+
+        // We only need to check and update generated source if we are consuming the NativeSDK as a git submodule (ie we aren't in a standalone release context)
+        if (File.Exists(Path.Combine(ModuleDirectory, "../ThirdParty/NativeSDK/.git")))
         {
             string GeneratedSourcePath = Path.Combine(ModuleDirectory, "GeneratedSource");
 
diff --git a/Source/Modio/Private/Internal/Convert/AuthParams.h b/Source/Modio/Private/Internal/Convert/AuthParams.h
index 76d433d1..956c82e2 100644
--- a/Source/Modio/Private/Internal/Convert/AuthParams.h
+++ b/Source/Modio/Private/Internal/Convert/AuthParams.h
@@ -45,8 +45,8 @@ MODIO_END_CONVERT_SWITCHES
 FORCEINLINE Modio::AuthenticationParams ToModio(const FModioAuthenticationParams& UnrealParams)
 {
     Modio::AuthenticationParams Params;
-	Params.AuthToken = ToSTD(FGenericPlatformHttp::UrlEncode(UnrealParams.AuthToken));
-	Params.UserEmail = UnrealParams.UserEmail.TrimStartAndEnd().IsEmpty() ? Modio::Optional<std::string>(ToSTD(UnrealParams.UserEmail)) : Modio::Optional<std::string>();
+	Params.AuthToken = ToModio(FGenericPlatformHttp::UrlEncode(UnrealParams.AuthToken));
+	Params.UserEmail = UnrealParams.UserEmail.TrimStartAndEnd().IsEmpty() ? Modio::Optional<std::string>(ToModio(UnrealParams.UserEmail)) : Modio::Optional<std::string>();
 	Params.bUserHasAcceptedTerms = UnrealParams.bUserHasAcceptedTerms;
 
 	return Params;
diff --git a/Source/Modio/Private/Internal/Convert/CreateModFileParams.h b/Source/Modio/Private/Internal/Convert/CreateModFileParams.h
new file mode 100644
index 00000000..f9d908d4
--- /dev/null
+++ b/Source/Modio/Private/Internal/Convert/CreateModFileParams.h
@@ -0,0 +1,26 @@
+/*
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *
+ *  This file is part of the mod.io UE4 Plugin.
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *
+ */
+
+#pragma once
+#include "Internal/Convert/Optional.h"
+#include "Internal/ModioConvert.h"
+#include "ModioSDK.h"
+#include "Types/ModioCreateModFileParams.h"
+
+FORCEINLINE Modio::CreateModFileParams ToModio(const FModioCreateModFileParams& In)
+{
+	Modio::CreateModFileParams Out;
+	Out.RootDirectory = ToModio(In.PathToModRootDirectory);
+	Out.Version = ToModioOptional<std::string>(In.VersionString);
+	Out.Changelog = ToModioOptional<std::string>(In.Changelog);
+	Out.bSetAsActive = ToModioOptional<bool>(In.bSetAsActiveRelease);
+	Out.MetadataBlob = ToModioOptional<std::string>(In.MetadataBlob);
+	return Out;
+}
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/CreateModParams.h b/Source/Modio/Private/Internal/Convert/CreateModParams.h
new file mode 100644
index 00000000..b6be0b85
--- /dev/null
+++ b/Source/Modio/Private/Internal/Convert/CreateModParams.h
@@ -0,0 +1,33 @@
+/*
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *
+ *  This file is part of the mod.io UE4 Plugin.
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *
+ */
+
+#pragma once
+#include "Internal/Convert/Optional.h"
+#include "Internal/Convert/Numerics.h"
+#include "Internal/ModioConvert.h"
+#include "ModioSDK.h"
+#include "Types/ModioCreateModParams.h"
+
+FORCEINLINE Modio::CreateModParams ToModio(const FModioCreateModParams& In)
+{
+	Modio::CreateModParams Out;
+	Out.PathToLogoFile = ToModio(In.PathToLogoFile);
+	Out.Name = ToModio(In.Name);
+	Out.Summary = ToModio(In.Summary);
+	Out.NamePath = ToModioOptional<std::string>(In.NamePath);
+	Out.bVisible = ToModioOptional<bool>(In.bVisible);
+	Out.Description = ToModioOptional<std::string>(In.Description);
+	Out.HomepageURL = ToModioOptional<std::string>(In.HomepageURL);
+	Out.Stock = ToModioOptional<std::size_t>(In.QuantityAvailable);
+	Out.MaturityRating = In.MaturityFlags.IsSet() ? static_cast<Modio::MaturityOption>(In.MaturityFlags.GetValue()): Modio::Optional<Modio::MaturityOption>{};
+	Out.MetadataBlob = ToModioOptional<std::string>(In.MetadataBlob);
+	Out.Tags = ToModioOptional<std::vector<std::string>>(In.Tags);
+    return Out;
+}
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/FilterParams.h b/Source/Modio/Private/Internal/Convert/FilterParams.h
index 73b6d5a2..a1998e6f 100644
--- a/Source/Modio/Private/Internal/Convert/FilterParams.h
+++ b/Source/Modio/Private/Internal/Convert/FilterParams.h
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io UE4 Plugin.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
- *   
+ *
  */
 
 #pragma once
@@ -50,34 +50,38 @@ FORCEINLINE Modio::FilterParams::SortFieldType ToModio(EModioSortFieldType Envir
 }
 MODIO_END_CONVERT_SWITCHES
 
-FORCEINLINE Modio::FilterParams ToModio(const FModioFilterParams& In )
+FORCEINLINE Modio::FilterParams ToModio(const FModioFilterParams& In)
 {
+	Modio::FilterParams Out;
+
+	if (In.isPaged)
+	{
+		Out.PagedResults(In.Index, In.Count);
+	}
+	else
+	{
+		Out.IndexedResults(In.Index, In.Count);
+	}
 
-    Modio::FilterParams Out;
-    
-    if (In.isPaged)
-    {
-        Out.PagedResults(In.Index,In.Count);
-    }
-    else
-    {
-        Out.IndexedResults(In.Index,In.Count);
-    }
-	
 	if (In.DateRangeBegin)
 	{
-		Out.MarkedLiveAfter(ToSTD(In.DateRangeBegin.GetValue()));
+		Out.MarkedLiveAfter(ToModio(In.DateRangeBegin.GetValue()));
 	}
-	
+
 	if (In.DateRangeEnd)
 	{
-		Out.MarkedLiveBefore(ToSTD(In.DateRangeEnd.GetValue()));
+		Out.MarkedLiveBefore(ToModio(In.DateRangeEnd.GetValue()));
+	}
+
+	if (In.MetadataBlobSearchString.IsSet())
+	{
+		Out.MetadataLike(ToModio(In.MetadataBlobSearchString.GetValue()));
 	}
 
-    return Out.SortBy(ToModio(In.SortField), ToModio(In.Direction))
-    .NameContains(ToSTD(In.SearchKeywords))
-    .MatchingIDs(ToModio<Modio::ModID>(In.IncludedIDs))
-    .ExcludingIDs(ToModio<Modio::ModID>(In.ExcludedIDs))
-    .WithTags(ToSTD(In.Tags))
-    .WithoutTags(ToSTD(In.ExcludedTags));
+	return Out.SortBy(ToModio(In.SortField), ToModio(In.Direction))
+		.NameContains(ToModio(In.SearchKeywords))
+		.MatchingIDs(ToModio<Modio::ModID>(In.IncludedIDs))
+		.ExcludingIDs(ToModio<Modio::ModID>(In.ExcludedIDs))
+		.WithTags(ToModio(In.Tags))
+		.WithoutTags(ToModio(In.ExcludedTags));
 }
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/ModCreationHandle.h b/Source/Modio/Private/Internal/Convert/ModCreationHandle.h
new file mode 100644
index 00000000..3dd02fd2
--- /dev/null
+++ b/Source/Modio/Private/Internal/Convert/ModCreationHandle.h
@@ -0,0 +1,26 @@
+/* 
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *  
+ *  This file is part of the mod.io UE4 Plugin.
+ *  
+ *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *   
+ */
+
+#pragma once
+#include "Internal/ModioConvert.h"
+#include "ModioSDK.h"
+#include "Types/ModioModCreationHandle.h"
+
+FORCEINLINE FModioModCreationHandle ToUnreal(const Modio::ModCreationHandle& In)
+{
+	FModioModCreationHandle Out;
+	Out.Underlying = ToUnreal(*In);
+	return Out;
+}
+
+FORCEINLINE Modio::ModCreationHandle ToModio(const FModioModCreationHandle& In)
+{
+    return Modio::ModCreationHandle(In.Underlying); 
+}
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/ModManagementEvent.h b/Source/Modio/Private/Internal/Convert/ModManagementEvent.h
index 18613971..3a573315 100644
--- a/Source/Modio/Private/Internal/Convert/ModManagementEvent.h
+++ b/Source/Modio/Private/Internal/Convert/ModManagementEvent.h
@@ -26,6 +26,8 @@ FORCEINLINE EModioModManagementEventType ToUnreal(Modio::ModManagementEvent::Eve
 			return EModioModManagementEventType::Uninstalled;
 		case Modio::ModManagementEvent::EventType::Updated:
 			return EModioModManagementEventType::Updated;
+		case Modio::ModManagementEvent::EventType::Uploaded:
+		return	EModioModManagementEventType::Uploaded;
 	}
 
 	checkf(false, TEXT("Missed a case in ToModio(EModioEnvironment Environment)"));
diff --git a/Source/Modio/Private/Internal/Convert/Numerics.h b/Source/Modio/Private/Internal/Convert/Numerics.h
new file mode 100644
index 00000000..0bc8a744
--- /dev/null
+++ b/Source/Modio/Private/Internal/Convert/Numerics.h
@@ -0,0 +1,22 @@
+/*
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *
+ *  This file is part of the mod.io UE4 Plugin.
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *
+ */
+
+#pragma once
+#include <cstdint>
+
+FORCEINLINE std::uint8_t ToModio(const uint8& In)
+{
+	return static_cast<std::uint8_t>(In);
+}
+
+FORCEINLINE uint8 ToUnreal(const std::uint8_t& In)
+{
+    return static_cast<uint8>(In); 
+}
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/Optional.h b/Source/Modio/Private/Internal/Convert/Optional.h
new file mode 100644
index 00000000..3237f956
--- /dev/null
+++ b/Source/Modio/Private/Internal/Convert/Optional.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *
+ *  This file is part of the mod.io UE4 Plugin.
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *
+ */
+
+#pragma once
+
+#include "Internal/ModioConvert.h"
+#include "ModioSDK.h"
+#include "Types/ModioCreateModParams.h"
+#include "Templates/EnableIf.h"
+
+template<typename DestinationType, typename SourceType>
+FORCEINLINE typename TEnableIf<TNot<TIsSame<SourceType,DestinationType>>::Value, typename Modio::Optional<DestinationType>>::Type ToModioOptional(const TOptional<SourceType>& In)
+{
+	if (In.IsSet())
+	{
+		return ToModio((SourceType) In.GetValue());
+	}
+	else
+	{
+		return {};
+	}
+}
+
+template<typename DestinationType, typename SourceType>
+FORCEINLINE typename TEnableIf<TIsSame<SourceType,DestinationType>::Value, typename Modio::Optional<DestinationType>>::Type ToModioOptional(const TOptional<SourceType>& In)
+{
+    if (In.IsSet())
+    {
+        return In.GetValue();
+    }
+    else
+    {
+        return {};
+    }
+} 
\ No newline at end of file
diff --git a/Source/Modio/Private/Internal/Convert/ReportParams.h b/Source/Modio/Private/Internal/Convert/ReportParams.h
index 99ce9288..26bc5776 100644
--- a/Source/Modio/Private/Internal/Convert/ReportParams.h
+++ b/Source/Modio/Private/Internal/Convert/ReportParams.h
@@ -25,26 +25,26 @@ FORCEINLINE Modio::ReportParams ToModio(const FModioReportParams& In)
 
 	if (In.ReporterName && !In.ReporterName->TrimStartAndEnd().IsEmpty())
 	{
-		ReporterName = ToSTD(In.ReporterName.GetValue());
+		ReporterName = ToModio(In.ReporterName.GetValue());
 	}
 
 	if (In.ReporterContact && !In.ReporterContact->TrimStartAndEnd().IsEmpty())
 	{
-		ReporterContact = ToSTD(In.ReporterContact.GetValue());
+		ReporterContact = ToModio(In.ReporterContact.GetValue());
 	}
 
 	switch (In.ReportedResourceType)
 	{
 		case FModioReportParams::ResourceType::Game:
-			return Modio::ReportParams(Modio::GameID(In.ResourceID), ToModio(In.Type), ToSTD(In.ReportDescription),
+			return Modio::ReportParams(Modio::GameID(In.ResourceID), ToModio(In.Type), ToModio(In.ReportDescription),
 									   ReporterName, ReporterContact);
 			break;
 		case FModioReportParams::ResourceType::Mod:
-			return Modio::ReportParams(Modio::ModID(In.ResourceID), ToModio(In.Type), ToSTD(In.ReportDescription),
+			return Modio::ReportParams(Modio::ModID(In.ResourceID), ToModio(In.Type), ToModio(In.ReportDescription),
 									   ReporterName, ReporterContact);
 			break;
 		case FModioReportParams::ResourceType::User:
-			return Modio::ReportParams(Modio::UserID(In.ResourceID), ToModio(In.Type), ToSTD(In.ReportDescription),
+			return Modio::ReportParams(Modio::UserID(In.ResourceID), ToModio(In.Type), ToModio(In.ReportDescription),
 									   ReporterName, ReporterContact);
 			break;
 	}
diff --git a/Source/Modio/Private/Internal/ModioConvert.h b/Source/Modio/Private/Internal/ModioConvert.h
index 07f7f21e..53bad06b 100644
--- a/Source/Modio/Private/Internal/ModioConvert.h
+++ b/Source/Modio/Private/Internal/ModioConvert.h
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io UE4 Plugin.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
- *   
+ *
  */
 
 #pragma once
@@ -21,14 +21,11 @@
 #include <string>
 #include <vector>
 
-FORCEINLINE std::string ToSTD(const FString& String);
-FORCEINLINE std::vector<std::string> ToSTD(const TArray<FString>& StringArray);
-FORCEINLINE std::chrono::system_clock::time_point ToSTD(FDateTime Time);
-
-// @todo: Make a ToModio that handles TOptional through templates
+FORCEINLINE std::string ToModio(const FString& String);
+FORCEINLINE std::vector<std::string> ToModio(const TArray<FString>& StringArray);
+FORCEINLINE std::chrono::system_clock::time_point ToModio(FDateTime Time);
 
 FORCEINLINE int64 ToUnreal(std::int64_t Value);
-FORCEINLINE uint8 ToUnreal(std::uint8_t Value);
 FORCEINLINE double ToUnreal(double Value);
 FORCEINLINE bool ToUnreal(bool Value);
 FORCEINLINE uint64 ToUnreal(std::size_t Value);
@@ -58,15 +55,13 @@ FORCEINLINE Modio::UserID ToModio(const FModioUserID& In);
 
 #pragma region Implementation
 
-
 // @todo: Rename this to ToModio as it doesn't matter that it's the part of STD of modio
-FORCEINLINE std::string ToSTD(const FString& String)
+FORCEINLINE std::string ToModio(const FString& String)
 {
 	return std::string(TCHAR_TO_UTF8(*String));
 }
 
-// @todo: Rename this to ToModio as it doesn't matter that it's the part of STD of modio
-FORCEINLINE std::vector<std::string> ToSTD(const TArray<FString>& StringArray)
+FORCEINLINE std::vector<std::string> ToModio(const TArray<FString>& StringArray)
 {
 	std::vector<std::string> Result;
 	Result.reserve(StringArray.Num());
@@ -77,10 +72,8 @@ FORCEINLINE std::vector<std::string> ToSTD(const TArray<FString>& StringArray)
 	return Result;
 }
 
-// @todo: Rename this to ToModio as it doesn't matter that it's the part of STD of modio
-FORCEINLINE std::chrono::system_clock::time_point ToSTD(FDateTime Time)
+FORCEINLINE std::chrono::system_clock::time_point ToModio(FDateTime Time)
 {
-	// @todonow: Verify that this becomes correct by printf debugging
 	return std::chrono::system_clock::time_point(std::chrono::system_clock::duration(Time.ToUnixTimestamp()));
 }
 
@@ -94,11 +87,6 @@ FORCEINLINE bool ToUnreal(bool Value)
 	return Value;
 }
 
-FORCEINLINE uint8 ToUnreal(std::uint8_t Value)
-{
-	return Value;
-}
-
 FORCEINLINE double ToUnreal(double Value)
 {
 	return Value;
@@ -390,5 +378,4 @@ typename TEnableIf<TIsDerivedFrom<FlagType, Modio::FlagImpl<UnderlyingType>>::Va
 	return static_cast<DestType>(Flags.RawValue());
 }
 
-
 #pragma endregion
diff --git a/Source/Modio/Private/Libraries/ModioFilterParamsLibrary.cpp b/Source/Modio/Private/Libraries/ModioFilterParamsLibrary.cpp
index 3a64591c..0b3a25b6 100644
--- a/Source/Modio/Private/Libraries/ModioFilterParamsLibrary.cpp
+++ b/Source/Modio/Private/Libraries/ModioFilterParamsLibrary.cpp
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io UE4 Plugin.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
- *   
+ *
  */
 
 #include "Libraries/ModioFilterParamsLibrary.h"
@@ -67,3 +67,8 @@ FModioFilterParams& UModioFilterParamsLibrary::PagedResults(FModioFilterParams&
 {
 	return Filter.PagedResults(PageNumber, PageSize);
 }
+
+FModioFilterParams& UModioFilterParamsLibrary::MetadataLike(FModioFilterParams& Filter, FString SearchString)
+{
+	return Filter.MetadataLike(SearchString);
+}
diff --git a/Source/Modio/Private/Libraries/ModioOptionalLibrary.cpp b/Source/Modio/Private/Libraries/ModioOptionalLibrary.cpp
index aa96c8f3..91bb3853 100644
--- a/Source/Modio/Private/Libraries/ModioOptionalLibrary.cpp
+++ b/Source/Modio/Private/Libraries/ModioOptionalLibrary.cpp
@@ -122,3 +122,14 @@ bool UModioOptionalLibrary::GetValue_ModioOptionalModDependencyList(
 {
 	return GetValueInternal(OptionalDependencyList, DependencyList);
 }
+
+bool UModioOptionalLibrary::IsSet_ModioOptionalModID(const struct FModioOptionalModID& OptionalID) 
+{
+	return IsSetInternal(OptionalID);
+}
+
+bool UModioOptionalLibrary::GetValue_ModioOptionalModID(const struct FModioOptionalModID& OptionalID,
+														struct FModioModID& ID)
+{
+	return GetValueInternal(OptionalID, ID);
+}
diff --git a/Source/Modio/Private/ModioSubsystem.cpp b/Source/Modio/Private/ModioSubsystem.cpp
index cb6fc702..c1dfdcb2 100644
--- a/Source/Modio/Private/ModioSubsystem.cpp
+++ b/Source/Modio/Private/ModioSubsystem.cpp
@@ -11,11 +11,14 @@
 #include "ModioSubsystem.h"
 #include "Engine/Engine.h"
 #include "Internal/Convert/AuthParams.h"
+#include "Internal/Convert/CreateModFileParams.h"
+#include "Internal/Convert/CreateModParams.h"
 #include "Internal/Convert/ErrorCode.h"
 #include "Internal/Convert/FilterParams.h"
 #include "Internal/Convert/InitializeOptions.h"
 #include "Internal/Convert/List.h"
 #include "Internal/Convert/ModCollectionEntry.h"
+#include "Internal/Convert/ModCreationHandle.h"
 #include "Internal/Convert/ModDependency.h"
 #include "Internal/Convert/ModInfo.h"
 #include "Internal/Convert/ModInfoList.h"
@@ -354,7 +357,8 @@ void UModioSubsystem::GetModTagOptionsAsync(FOnGetModTagOptionsDelegateFast Call
 		Callback.ExecuteIfBound({}, CachedModTags);
 		return;
 	}
-
+	// TODO: @modio-UE4 capturing `this` is bad and we shouldn't do it. Better to store the cached tags as a TSharedPtr
+	// and capture that by value, so we are guaranteed lifetime
 	Modio::GetModTagOptionsAsync(
 		[this, Callback](Modio::ErrorCode ec, Modio::Optional<Modio::ModTagOptions> ModTagOptions) {
 			CachedModTags = ToUnrealOptional<FModioModTagOptions>(ModTagOptions);
@@ -370,6 +374,15 @@ void UModioSubsystem::K2_GetModTagOptionsAsync(FOnGetModTagOptionsDelegate Callb
 		}));
 }
 
+void UModioSubsystem::SubmitNewModAsync(FModioModCreationHandle Handle, FModioCreateModParams Params,
+										FOnSubmitNewModDelegateFast Callback)
+{
+	Modio::SubmitNewModAsync(ToModio(Handle), ToModio(Params),
+							 [Callback](Modio::ErrorCode ec, Modio::Optional<Modio::ModID> NewModID) {
+								 Callback.ExecuteIfBound(ec, ToUnrealOptional<FModioModID>(NewModID));
+							 });
+}
+
 void UModioSubsystem::RequestEmailAuthCodeAsync(const FModioEmailAddress& EmailAddress,
 												FOnErrorOnlyDelegateFast Callback)
 {
@@ -554,7 +567,12 @@ void UModioSubsystem::GetModDependenciesAsync(FModioModID ModID, FOnGetModDepend
 		});
 }
 
-MODIO_API void UModioSubsystem::K2_GetModDependenciesAsync(FModioModID ModID, FOnGetModDependenciesDelegate Callback)
+FModioModCreationHandle UModioSubsystem::GetModCreationHandle()
+{
+	return ToUnreal(Modio::GetModCreationHandle());
+}
+
+void UModioSubsystem::K2_GetModDependenciesAsync(FModioModID ModID, FOnGetModDependenciesDelegate Callback)
 {
 	GetModDependenciesAsync(ModID, FOnGetModDependenciesDelegateFast::CreateLambda(
 									   [Callback](FModioErrorCode ec, TOptional<FModioModDependencyList> Dependencies) {
@@ -563,6 +581,30 @@ MODIO_API void UModioSubsystem::K2_GetModDependenciesAsync(FModioModID ModID, FO
 									   }));
 }
 
+void UModioSubsystem::SubmitNewModFileForMod(FModioModID Mod, FModioCreateModFileParams Params)
+{
+	Modio::SubmitNewModFileForMod(ToModio(Mod), ToModio(Params));
+}
+
+void UModioSubsystem::K2_SubmitNewModFileForMod(FModioModID Mod, FModioCreateModFileParams Params)
+{
+	SubmitNewModFileForMod(Mod, Params);
+}
+
+FModioModCreationHandle UModioSubsystem::K2_GetModCreationHandle()
+{
+	return GetModCreationHandle();
+}
+
+void UModioSubsystem::K2_SubmitNewModAsync(FModioModCreationHandle Handle, FModioCreateModParams Params,
+										   FOnSubmitNewModDelegate Callback)
+{
+	SubmitNewModAsync(
+		Handle, Params,
+		FOnSubmitNewModDelegateFast::CreateLambda(
+			[Callback](FModioErrorCode ec, TOptional<FModioModID> NewModID) { Callback.ExecuteIfBound(ec, FModioOptionalModID {NewModID}); }));
+}
+
 /// File scope implementations
 
 #pragma region Implementation
diff --git a/Source/Modio/Private/Types/ModioFilterParamsUImpl.cpp b/Source/Modio/Private/Types/ModioFilterParamsUImpl.cpp
index b1dd23ff..145390ad 100644
--- a/Source/Modio/Private/Types/ModioFilterParamsUImpl.cpp
+++ b/Source/Modio/Private/Types/ModioFilterParamsUImpl.cpp
@@ -1,15 +1,15 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io UE4 Plugin.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
- *   
+ *
  */
 
-#include "Types/ModioFilterParams.h"
 #include "Internal/Convert/FilterParams.h"
+#include "Types/ModioFilterParams.h"
 
 FModioFilterParams& FModioFilterParams::MatchingIDs(const TArray<FModioModID>& IDs)
 {
@@ -100,4 +100,10 @@ FModioFilterParams& FModioFilterParams::PagedResults(uint64 PageNumber, uint64 P
 FString FModioFilterParams::ToString() const
 {
 	return FString(UTF8_TO_TCHAR(ToModio(*this).ToString().c_str()));
+}
+
+FModioFilterParams& FModioFilterParams::MetadataLike(FString SearchString)
+{
+	MetadataBlobSearchString = SearchString;
+	return *this;
 }
\ No newline at end of file
diff --git a/Source/Modio/Public/Libraries/ModioFilterParamsLibrary.h b/Source/Modio/Public/Libraries/ModioFilterParamsLibrary.h
index 012a7aed..04f0aa35 100644
--- a/Source/Modio/Public/Libraries/ModioFilterParamsLibrary.h
+++ b/Source/Modio/Public/Libraries/ModioFilterParamsLibrary.h
@@ -1,11 +1,11 @@
-/* 
+/*
  *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
- *  
+ *
  *  This file is part of the mod.io UE4 Plugin.
- *  
- *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *
+ *  Distributed under the MIT License. (See accompanying file LICENSE or
  *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
- *   
+ *
  */
 
 #pragma once
@@ -26,7 +26,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 */
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& MatchingIDs(UPARAM(ref)FModioFilterParams& Filter, const TArray<FModioModID>& IDs)
+	static FModioFilterParams& MatchingIDs(UPARAM(ref) FModioFilterParams& Filter, const TArray<FModioModID>& IDs)
 	{
 		Filter.MatchingIDs(IDs);
 		return Filter;
@@ -38,13 +38,12 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 */
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& ExcludingIDs(UPARAM(ref)FModioFilterParams& Filter, const TArray<FModioModID>& IDs)
+	static FModioFilterParams& ExcludingIDs(UPARAM(ref) FModioFilterParams& Filter, const TArray<FModioModID>& IDs)
 	{
 		Filter.ExcludingIDs(IDs);
 		return Filter;
 	}
 
-
 	/**
 	 * @brief Indicates results should be sorted using the specified field and direction
 	 * @param ByField Field to sort with
@@ -52,7 +51,8 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& SortBy(UPARAM(ref)FModioFilterParams& Filter, EModioSortFieldType ByField, EModioSortDirection ByDirection);
+	static FModioFilterParams& SortBy(UPARAM(ref) FModioFilterParams& Filter, EModioSortFieldType ByField,
+									  EModioSortDirection ByDirection);
 
 	/**
 	 * @brief Only include mods where the name contains the provided string
@@ -60,15 +60,15 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& NameContains(UPARAM(ref)FModioFilterParams& Filter, const FString& SearchString);
-	
+	static FModioFilterParams& NameContains(UPARAM(ref) FModioFilterParams& Filter, const FString& SearchString);
+
 	/**
 	 * @brief Only include mods where the name contains the provided strings
 	 * @param SearchString Search string
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& NameContainsStrings(UPARAM(ref)FModioFilterParams& Filter, const FString& SearchString);
+	static FModioFilterParams& NameContainsStrings(UPARAM(ref) FModioFilterParams& Filter, const FString& SearchString);
 
 	/**
 	 * @brief Only include mods that were marked live (i.e released) after the specified date
@@ -76,7 +76,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& MarkedLiveAfter(UPARAM(ref)FModioFilterParams& Filter, FDateTime LiveAfter);
+	static FModioFilterParams& MarkedLiveAfter(UPARAM(ref) FModioFilterParams& Filter, FDateTime LiveAfter);
 
 	/**
 	 * @brief Only include mods that were marked live (i.e released) before the specified date
@@ -84,7 +84,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& MarkedLiveBefore(UPARAM(ref)FModioFilterParams& Filter, FDateTime LiveBefore);
+	static FModioFilterParams& MarkedLiveBefore(UPARAM(ref) FModioFilterParams& Filter, FDateTime LiveBefore);
 
 	/**
 	 * @brief Only include mods that have the specified tag
@@ -92,7 +92,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& WithTag(UPARAM(ref)FModioFilterParams& Filter, const FString& Tag);
+	static FModioFilterParams& WithTag(UPARAM(ref) FModioFilterParams& Filter, const FString& Tag);
 
 	/**
 	 * @brief Only include mods that have all the specified tags (tag1 AND tag2 AND tagN...)
@@ -100,7 +100,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& WithTags(UPARAM(ref)FModioFilterParams& Filter, const TArray<FString>& NewTags);
+	static FModioFilterParams& WithTags(UPARAM(ref) FModioFilterParams& Filter, const TArray<FString>& NewTags);
 
 	/**
 	 * @brief Only include mods that do not have the specified tag
@@ -108,7 +108,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& WithoutTag(UPARAM(ref)FModioFilterParams& Filter, const FString& Tag);
+	static FModioFilterParams& WithoutTag(UPARAM(ref) FModioFilterParams& Filter, const FString& Tag);
 
 	/**
 	 * @brief Only include mods that do not have any of the specified tags ( NOT (tag1 OR tag2 OR tagN...))
@@ -116,7 +116,7 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& WithoutTags(UPARAM(ref)FModioFilterParams& Filter, const TArray<FString>& NewTags);
+	static FModioFilterParams& WithoutTags(UPARAM(ref) FModioFilterParams& Filter, const TArray<FString>& NewTags);
 
 	/**
 	 * @brief Returns a sub-range of query results from StartIndex to StartIndex + ResultCount
@@ -125,7 +125,8 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& IndexedResults(UPARAM(ref)FModioFilterParams& Filter, int64 StartIndex, int64 ResultCount);
+	static FModioFilterParams& IndexedResults(UPARAM(ref) FModioFilterParams& Filter, int64 StartIndex,
+											  int64 ResultCount);
 
 	/**
 	 * @brief Returns a sub-range of query results based on a specified page size and index
@@ -134,5 +135,13 @@ class MODIO_API UModioFilterParamsLibrary : public UBlueprintFunctionLibrary
 	 * @return *this
 	 **/
 	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
-	static FModioFilterParams& PagedResults(UPARAM(ref)FModioFilterParams& Filter, int64 PageNumber, int64 PageSize);
+	static FModioFilterParams& PagedResults(UPARAM(ref) FModioFilterParams& Filter, int64 PageNumber, int64 PageSize);
+
+	/**
+	 * @brief Only include mods with a metadata blob containing the specified substring
+	 * @param SearchString The substring to search for
+	 * @return *this
+	 **/
+	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Filter")
+	static FModioFilterParams& MetadataLike(UPARAM(ref) FModioFilterParams& Filter, FString SearchString);
 };
diff --git a/Source/Modio/Public/Libraries/ModioOptionalLibrary.h b/Source/Modio/Public/Libraries/ModioOptionalLibrary.h
index 260035e1..7ad5412a 100644
--- a/Source/Modio/Public/Libraries/ModioOptionalLibrary.h
+++ b/Source/Modio/Public/Libraries/ModioOptionalLibrary.h
@@ -200,4 +200,25 @@ class MODIO_API UModioOptionalLibrary : public UBlueprintFunctionLibrary
 	static bool GetValue_ModioOptionalModDependencyList(
 		const struct FModioOptionalModDependencyList& OptionalDependencyList,
 		struct FModioModDependencyList& DependencyList);
+
+
+	/**
+	 * Check if the ModioModID has a valid value
+	 *
+	 * @param OptionalID - The optional to check
+	 * @return true if it has a value set
+	 */
+	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Optional",
+			  meta = (DisplayName = "IsSet (ModioModID)", CompactNodeTitle = "IsSet"))
+	static bool IsSet_ModioOptionalModID(const struct FModioOptionalModID& OptionalID);
+
+	/**
+	 * Get the ID from the optional if it's set
+	 *
+	 * @param OptionalID - if this returned false, then this will be defaulted
+	 * @param ID - the underlying value
+	 * @return true if the optional has a value set
+	 */
+	UFUNCTION(BlueprintPure, Category = "mod.io|Utilities|Optional", DisplayName = "GetValue (ModioOptionalID)")
+	static bool GetValue_ModioOptionalModID(const struct FModioOptionalModID& OptionalID, struct FModioModID& ID);
 };
diff --git a/Source/Modio/Public/ModioSubsystem.h b/Source/Modio/Public/ModioSubsystem.h
index 9f06e309..1162eba8 100644
--- a/Source/Modio/Public/ModioSubsystem.h
+++ b/Source/Modio/Public/ModioSubsystem.h
@@ -14,11 +14,14 @@
 #include "Subsystems/EngineSubsystem.h"
 #include "Types/ModioAuthenticationParams.h"
 #include "Types/ModioCommonTypes.h"
+#include "Types/ModioCreateModFileParams.h"
+#include "Types/ModioCreateModParams.h"
 #include "Types/ModioErrorCode.h"
 #include "Types/ModioFilterParams.h"
 #include "Types/ModioImage.h"
 #include "Types/ModioInitializeOptions.h"
 #include "Types/ModioModCollectionEntry.h"
+#include "Types/ModioModCreationHandle.h"
 #include "Types/ModioModDependencyList.h"
 #include "Types/ModioModInfo.h"
 #include "Types/ModioModInfoList.h"
@@ -42,6 +45,7 @@ DECLARE_DELEGATE_TwoParams(FOnGetMediaDelegateFast, FModioErrorCode, TOptional<F
 DECLARE_DELEGATE_TwoParams(FOnGetModTagOptionsDelegateFast, FModioErrorCode, TOptional<FModioModTagOptions>);
 DECLARE_DELEGATE_TwoParams(FOnGetTermsOfUseDelegateFast, FModioErrorCode, TOptional<FModioTerms>);
 DECLARE_DELEGATE_TwoParams(FOnGetModDependenciesDelegateFast, FModioErrorCode, TOptional<FModioModDependencyList>);
+DECLARE_DELEGATE_TwoParams(FOnSubmitNewModDelegateFast, FModioErrorCode, TOptional<FModioModID>);
 
 // Blueprint version of delegates
 DECLARE_DYNAMIC_DELEGATE_OneParam(FOnErrorOnlyDelegate, FModioErrorCode, ErrorCode);
@@ -55,6 +59,7 @@ DECLARE_DYNAMIC_DELEGATE_TwoParams(FOnGetModTagOptionsDelegate, FModioErrorCode,
 DECLARE_DYNAMIC_DELEGATE_TwoParams(FOnGetTermsOfUseDelegate, FModioErrorCode, ErrorCode, FModioOptionalTerms, Terms);
 DECLARE_DYNAMIC_DELEGATE_TwoParams(FOnGetModDependenciesDelegate, FModioErrorCode, ErrorCode,
 								   FModioOptionalModDependencyList, Dependencies);
+DECLARE_DYNAMIC_DELEGATE_TwoParams(FOnSubmitNewModDelegate, FModioErrorCode, ErrorCode, FModioOptionalModID, NewModID);
 
 /**
  * @brief Thin wrapper around the mod.io SDK. This mostly wraps all the functions available in modio/ModioSDK.h that's
@@ -335,6 +340,46 @@ class UModioSubsystem : public UEngineSubsystem
 	 **/
 	MODIO_API void GetModDependenciesAsync(FModioModID ModID, FOnGetModDependenciesDelegateFast Callback);
 
+	/**
+	 * @brief Gets a new mod handle for use with SubmitNewModAsync.
+	 * @returns New handle
+	 * @experimental
+	 */
+	MODIO_API FModioModCreationHandle GetModCreationHandle();
+
+	/**
+	 * @brief Requests the creation of a new mod on the server with the specified parameters
+	 * @param Handle The ModCreationHandle for this submission. Once this method invokes your callback indicating
+	 * success, the ModCreationHandle is invalid for the rest of the session and you should request a new one for the
+	 * next submission attempt.
+	 * @param Params Information about the new mod to create
+	 * @param Callback Callback providing a status code and an optional FModioModID for the newly created mod
+	 * @experimental
+	 * @requires initialized-sdk
+	 * @requires authenticated-user
+	 * @requires no-rate-limiting
+	 * @errorcategory NetworkError|Couldn't connect to mod.io servers
+	 * @error GenericError::SDKNotInitialized|SDK not initialized
+	 * @errorcategory InvalidArgsError|Some fields in Params did not pass validation
+	 * @error UserDataError::InvalidUser|No authenticated user
+	 */
+	MODIO_API void SubmitNewModAsync(FModioModCreationHandle Handle, FModioCreateModParams Params,
+									 FOnSubmitNewModDelegateFast Callback);
+
+	/**
+	 * @brief Queues the upload of a new mod file release for the specified mod, using the submitted parameters. The
+	 * upload's progress can be tracked in the same way as downloads; when completed, a Mod Management Event will be
+	 * triggered with the result code for the upload.
+	 * @param Mod The ID of the mod you are submitting a file for
+	 * @param Params Information about the mod file being created, including the root path of the directory that will be
+	 * archived
+	 * @experimental
+	 * @requires initialized-sdk
+	 * @requires authenticated-user
+	 * @requires no-rate-limiting
+	 * @error UserDataError::InvalidUser|No authenticated user
+	 */
+	MODIO_API void SubmitNewModFileForMod(FModioModID Mod, FModioCreateModFileParams Params);
 	/**
 	 * @brief Begins email authentication for the current session by requesting a one-time code be sent to the
 	 * specified email address if it is associated with a Mod.io account
@@ -769,6 +814,50 @@ class UModioSubsystem : public UEngineSubsystem
 	UFUNCTION(BlueprintCallable, DisplayName = "SubmitModRatingAsync", Category = "mod.io|Mods")
 	MODIO_API void K2_SubmitModRatingAsync(FModioModID Mod, EModioRating Rating, FOnErrorOnlyDelegate Callback);
 
+	/**
+	 * @brief Gets a new mod handle for use with SubmitNewModAsync.
+	 * @returns New handle
+	 * @experimental
+	 */
+	UFUNCTION(BlueprintCallable, DisplayName = "GetModCreationHandle", Category = "mod.io|Mods|Submission")
+	MODIO_API FModioModCreationHandle K2_GetModCreationHandle();
+
+	/**
+	 * @brief Requests the creation of a new mod on the server with the specified parameters
+	 * @param Handle The ModCreationHandle for this submission. Once this method invokes your callback indicating
+	 * success, the ModCreationHandle is invalid for the rest of the session and you should request a new one for the
+	 * next submission attempt.
+	 * @param Params Information about the new mod to create
+	 * @param Callback Callback providing a status code and an optional FModioModID for the newly created mod
+	 * @experimental
+	 * @requires initialized-sdk
+	 * @requires authenticated-user
+	 * @requires no-rate-limiting
+	 * @errorcategory NetworkError|Couldn't connect to mod.io servers
+	 * @error GenericError::SDKNotInitialized|SDK not initialized
+	 * @errorcategory InvalidArgsError|Some fields in Params did not pass validation
+	 * @error UserDataError::InvalidUser|No authenticated user
+	 */
+	UFUNCTION(BlueprintCallable, DisplayName = "SubmitNewModAsync", Category = "mod.io|Mods|Submission")
+	MODIO_API void K2_SubmitNewModAsync(FModioModCreationHandle Handle, FModioCreateModParams Params,
+										FOnSubmitNewModDelegate Callback);
+
+	/**
+	 * @brief Queues the upload of a new mod file release for the specified mod, using the submitted parameters. The
+	 * upload's progress can be tracked in the same way as downloads; when completed, a Mod Management Event will be
+	 * triggered with the result code for the upload.
+	 * @param Mod The ID of the mod you are submitting a file for
+	 * @param Params Information about the mod file being created, including the root path of the directory that will be
+	 * archived
+	 * @experimental
+	 * @requires initialized-sdk
+	 * @requires authenticated-user
+	 * @requires no-rate-limiting
+	 * @error UserDataError::InvalidUser|No authenticated user
+	 */
+	UFUNCTION(BlueprintCallable, DisplayName = "SubmitNewModFileForMod", Category = "mod.io|Mods|Submission")
+	MODIO_API void K2_SubmitNewModFileForMod(FModioModID Mod, FModioCreateModFileParams Params);
+
 	/**
 	 * @brief Sends a content report to mod.io. When using this function, please inform your users that if they provide
 	 * their contact name or details in the Report parameter, that those may be shared with the person responsible for
diff --git a/Source/Modio/Public/Types/ModioCommonTypes.h b/Source/Modio/Public/Types/ModioCommonTypes.h
index de4cc97c..4bfc7c11 100644
--- a/Source/Modio/Public/Types/ModioCommonTypes.h
+++ b/Source/Modio/Public/Types/ModioCommonTypes.h
@@ -192,6 +192,14 @@ struct TStructOpsTypeTraits<FModioModID> : public TStructOpsTypeTraitsBase2<FMod
 	};
 };
 
+USTRUCT(BlueprintType)
+struct MODIO_API FModioOptionalModID
+{
+	GENERATED_BODY()
+
+	TOptional<FModioModID> Internal;
+};
+
 /** @brief Strong type for Game IDs */
 USTRUCT(BlueprintType, meta = (HasNativeMake = "Modio.ModioCommonTypesLibrary.MakeGameId"))
 struct MODIO_API FModioGameID
diff --git a/Source/Modio/Public/Types/ModioCreateModFileParams.h b/Source/Modio/Public/Types/ModioCreateModFileParams.h
new file mode 100644
index 00000000..3b5a2491
--- /dev/null
+++ b/Source/Modio/Public/Types/ModioCreateModFileParams.h
@@ -0,0 +1,30 @@
+/* 
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *  
+ *  This file is part of the mod.io UE4 Plugin.
+ *  
+ *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *   
+ */
+
+#pragma once
+
+#include "ModioCreateModFileParams.generated.h"
+
+USTRUCT(BlueprintType)
+struct MODIO_API FModioCreateModFileParams
+{
+	GENERATED_BODY()
+
+	UPROPERTY(BlueprintReadWrite, EditAnywhere)
+	FString PathToModRootDirectory;
+
+	TOptional<FString> VersionString;
+
+	TOptional<FString> Changelog;
+
+	TOptional<bool> bSetAsActiveRelease;
+
+	TOptional<FString> MetadataBlob;
+};
\ No newline at end of file
diff --git a/Source/Modio/Public/Types/ModioCreateModParams.h b/Source/Modio/Public/Types/ModioCreateModParams.h
new file mode 100644
index 00000000..03fed141
--- /dev/null
+++ b/Source/Modio/Public/Types/ModioCreateModParams.h
@@ -0,0 +1,45 @@
+/* 
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *  
+ *  This file is part of the mod.io UE4 Plugin.
+ *  
+ *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *   
+ */
+
+#pragma once
+
+#include "ModioCreateModParams.generated.h"
+
+USTRUCT(BlueprintType)
+struct MODIO_API FModioCreateModParams
+{
+	GENERATED_BODY()
+
+	UPROPERTY(BlueprintReadWrite, EditAnywhere)
+	FString PathToLogoFile;
+
+	UPROPERTY(BlueprintReadWrite, EditAnywhere)
+	FString Name;
+
+	UPROPERTY(BlueprintReadWrite, EditAnywhere)
+	FString Summary;
+
+	TOptional<FString> NamePath;
+
+	TOptional<bool> bVisible;
+	
+	TOptional<FString> Description;
+	
+	TOptional<FString> HomepageURL;
+	
+	TOptional<int64> QuantityAvailable;
+	
+	TOptional<uint8> MaturityFlags;
+	
+	TOptional<FString> MetadataBlob;
+	
+	TOptional<TArray<FString>> Tags; 
+
+};
\ No newline at end of file
diff --git a/Source/Modio/Public/Types/ModioFilterParams.h b/Source/Modio/Public/Types/ModioFilterParams.h
index c58ef4a3..e862355b 100644
--- a/Source/Modio/Public/Types/ModioFilterParams.h
+++ b/Source/Modio/Public/Types/ModioFilterParams.h
@@ -100,6 +100,13 @@ struct MODIO_API FModioFilterParams
 	 **/
 	FModioFilterParams& MarkedLiveBefore(FDateTime LiveBefore);
 
+	/**
+	 * @brief Only include mods with a metadata blob containing the specified substring
+	 * @param SearchString The substring to search for
+	 * @return *this
+	 **/
+	FModioFilterParams& MetadataLike(FString SearchString);
+
 	/**
 	 * @brief Only include mods that have the specified tag
 	 * @param Tag Tag to include
@@ -164,7 +171,7 @@ struct MODIO_API FModioFilterParams
 	TArray<FString> ExcludedTags;
 	TArray<FModioModID> IncludedIDs;
 	TArray<FModioModID> ExcludedIDs;
-
+	TOptional<FString> MetadataBlobSearchString;
 	bool isPaged = false;
 	int64 Index = 0;
 	int64 Count = 100;
diff --git a/Source/Modio/Public/Types/ModioModCreationHandle.h b/Source/Modio/Public/Types/ModioModCreationHandle.h
new file mode 100644
index 00000000..a1593229
--- /dev/null
+++ b/Source/Modio/Public/Types/ModioModCreationHandle.h
@@ -0,0 +1,31 @@
+/* 
+ *  Copyright (C) 2021 mod.io Pty Ltd. <https://mod.io>
+ *  
+ *  This file is part of the mod.io UE4 Plugin.
+ *  
+ *  Distributed under the MIT License. (See accompanying file LICENSE or 
+ *   view online at <https://github.com/modio/modio-ue4/blob/main/LICENSE>)
+ *   
+ */
+
+#pragma once
+
+#include "ModioModCreationHandle.generated.h"
+
+namespace Modio
+{
+	struct ModCreationHandle;
+}
+
+struct FModioModCreationHandle;
+
+USTRUCT(BlueprintType)
+struct MODIO_API FModioModCreationHandle
+{
+	GENERATED_BODY()
+
+	private:
+	int64 Underlying;
+	friend FModioModCreationHandle ToUnreal(const Modio::ModCreationHandle& In);
+	friend Modio::ModCreationHandle ToModio(const FModioModCreationHandle& In);
+};
diff --git a/Source/Modio/Public/Types/ModioModManagementEvent.h b/Source/Modio/Public/Types/ModioModManagementEvent.h
index 2bed84e6..d950f0ea 100644
--- a/Source/Modio/Public/Types/ModioModManagementEvent.h
+++ b/Source/Modio/Public/Types/ModioModManagementEvent.h
@@ -22,7 +22,8 @@ enum class EModioModManagementEventType : uint8
 {
 	Installed, /** Mod installation to local storage */
 	Uninstalled, /** Mod uninstallation from local storage*/
-	Updated /** Mod local installation updated to latest version*/
+	Updated, /** Mod local installation updated to latest version*/
+	Uploaded, /** Mod file was uploaded*/
 };
 
 /** @brief Simple struct representing the outcome of a mod management operation */
diff --git a/Source/Modio/Public/Types/ModioReportParams.h b/Source/Modio/Public/Types/ModioReportParams.h
index 5d547269..900eb66e 100644
--- a/Source/Modio/Public/Types/ModioReportParams.h
+++ b/Source/Modio/Public/Types/ModioReportParams.h
@@ -17,7 +17,6 @@ namespace Modio
 	class ReportParams;
 }
 
-
 UENUM(BlueprintType)
 enum class EModioReportType : uint8
 {
diff --git a/Source/ModioTests/Private/Tests/ListAllModsTest.cpp b/Source/ModioTests/Private/Tests/ListAllModsTest.cpp
index 4291e1ca..73566222 100644
--- a/Source/ModioTests/Private/Tests/ListAllModsTest.cpp
+++ b/Source/ModioTests/Private/Tests/ListAllModsTest.cpp
@@ -213,4 +213,19 @@ bool FModioListAllModsIDFilterTest::RunTest(const FString& Parameters)
 	return true;
 }
 
+IMPLEMENT_SIMPLE_AUTOMATION_TEST(FModioListAllModsMetadataFilterTest, "Modio.ListAllMods.MetadataFilter",
+								 EAutomationTestFlags::EditorContext | EAutomationTestFlags::ClientContext |
+									 EAutomationTestFlags::ProductFilter)
+bool FModioListAllModsMetadataFilterTest::RunTest(const FString& Parameters)
+{
+	ADD_LATENT_AUTOMATION_COMMAND(FModioInitializeAsyncCommand(this));
+
+
+	ADD_LATENT_AUTOMATION_COMMAND(FModioListAllModsAsyncCommand(this, FModioFilterParams().MetadataLike("SomeString")));
+
+
+	ADD_LATENT_AUTOMATION_COMMAND(FModioShutdownAsyncCommand(this));
+	return true;
+}
+
 #endif // WITH_DEV_AUTOMATION_TESTS