[ Active Development | Regular Updates | Community Support ]
Modernized 1.12 is your all-in-one solution for bringing Minecraft 1.12.2 into 2025! Whether you're a player seeking the cleanest vanilla+ experience or a modpack developer looking for the perfect foundation, this pack delivers with full performance optimizations, extensive QoL improvements, and a complete development toolkit.
This isn't just another backport modpack. We believe Minecraft 1.12 represents a golden era of the game, with its perfect balance of mechanics, performance, and charm. While newer versions of Minecraft have taken different directions, we're preserving and enhancing what made 1.12 special.
Think of this as 1.12 Enhanced rather than Modern Minecraft Backported.
We're building upon what made this version great, not trying to turn it into something it's not.
- ✓ Modern performance improvements
- ✓ Quality of life features
- ✓ Carefully selected backports
- ✓ Enhanced vanilla mechanics
- ✓ Starting new modpack projects
- ✓ Modpack jam participants
- ✓ Content creators
- Click here to view guide!
- Recommended mods & resource packs to add (w/ notes!)
- Incompatible mod list
- Full pack development guidelines! (not sure what mod to use? read that!)
- Full list of included mods in Modernized 1.12
- Java 21/22 compatibility via Cleanroom Loader
- 50+ modern performance mods
- Pre-configured for maximum compatibility
- Modder-reviewed optimizations
- CraftTweaker with 10+ addons
- GameStages progression system
- Comprehensive tweaker suite
- Advanced debugging tools
- Detailed tutorial scripts
- Example implementations
- Advanced event handling
- Compatibility guides
More detailed instructions coming soon!
- Install Modernized 1.12 normally to your modloader of choice
- Download the ZIP file of the latest Cleanroom release (eg, Cleanroom-MMC-instance-0.2.4-alpha.zip)
- Drag ZIP file into Prism Launcher
- Click Edit for the imported project
- Click Settings, check Java Installation, click Auto-detect, select Java 21 or Java 22 (download these from Oracle if you don't have either!)
- Open the folder for the project by clicking "Folder" on the main Prism window
- Move all folders from Modernized 1.12 (mods, config, etc) to the ".minecraft" folder of the folder you opened last step.
- Play!
The complete package of optimization mods for 1.12, all preconfigured, verified by modders, and tested for maximum performance and compatibility.
While we're constantly on the hunt for the newest and best performance mods, we're not just throwing any performance mod in.
All the best backports 1.12 has to offer with raids, tricky trials, oceans, and many small features, we've got you covered.
We're purposely not including some backports that are either not popular or ruin the 1.12 experience.
Let's be honest, you probably can't play Minecraft without some modern QoL.
We've got you covered with Quark (w/ bloat disabled), borderless fullscreen, inventory sorting, improved visuals and audio and more!
Everything you need for the perfect 1.12 experience:
- Performance: Increased FPS, less RAM usage
- Quality of Life: Modern UI, controls, sorting
- Content: Carefully selected backports and vanilla-like content
- Polish: Bug fixes, visual improvements
A complete toolkit for modpack development:
- Scripting: CraftTweaker w/ 10+ addons
- Tweaking: Universal Tweaks, RLMixins, RLTweaker2
- Progression: GameStages, Tool Progression, custom events
- Tools: MPUtils, config checkers, debugging
- Polish: Discord integration, pack release management and customization
- Documentation: Comprehensive example scripts, tutorials, and documentation
Comprehensive example scripts with detailed comments for every aspect of modpack development. Our example scripts are designed to teach you everything from basics to advanced techniques.
- First-time join detection and custom welcome messages
- Death and respawn event handling with custom item giving
- Advanced block interaction events (left/right click)
- Timed event execution using catenation
- GameStage integration with entity death events
- Player progression tracking
- In-game script reloading (yes, 1.12 has this!)
- Server-side validation and checks
- Complex conditional statements
- Sound & particle effects
- Custom command execution
- Data persistence handling
This modpack would not be possible without the incredible people of the 1.12 Coalition, a community formed to preserve and improve the 1.12 modded experience.
Join the community by clicking the image below to get support and updates for all things 1.12!
Modernized 1.12 is open source! Contributions are welcome and appreciated! View our GitHub repository