Godot Engine – Multi-platform 2D and 3D game engine

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

A refreshingly simple data-driven game engine built in Rust

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

A simple and easy-to-use library to enjoy videogames programming

egui: an easy-to-use immediate mode GUI in Rust that runs on both web and native

Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

Desktop/Android/HTML5/iOS Java game development framework

🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

Archived — A list of games, add-ons, maps, etc. hosted on GitHub. Any genre. Any platform. Any engine.

Development at the speed of light

Turn Claude Code into a full game dev studio — 49 AI agents, 72 workflow skills, and a complete coordination system mirroring real studio hierarchy.