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Git Courier — SSH vs HTTPS

An interactive browser-based game that teaches you how Git protocols actually work. Play through concept cards and quizzes to build a solid mental model of SSH, HTTPS, and the GitHub CLI.

Play it live →

What you'll learn

  • Why Git needs protocols at all — local repos, remotes, and what origin means
  • How SSH key authentication works (and why your private key never leaves your machine)
  • Why HTTPS with a token is safe despite "sending credentials over the wire"
  • When to use SSH vs HTTPS (spoiler: CI/CD has a clear winner)
  • How gh auth login works under the hood
  • The difference between git transport layers and workflow tools like gh

Topics covered

Round Type Subject
1 Concept Local repos, remotes, and origin
2 Concept SSH key pairs & challenge-response auth
3 Quiz SSH basics
4 Concept HTTPS & TLS handshake
5 Quiz HTTPS & token security
6 Sort game SSH vs HTTPS properties
7–8 Concept + Quiz CI/CD & firewall considerations
9–10 Concept + Quiz How gh CLI uses OAuth
11 Quiz Putting it all together

Running locally

Just open index.html in a browser — no build step, no dependencies.

open index.html

Deploying

Hosted on GitHub Pages from the main branch root. Any push to main updates the live site.