The Open Software & Tools Directory

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

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

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

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

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

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

Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x &

:a: Web framework for building virtual reality experiences.

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

Powerful web graphics runtime built on WebGL, WebGPU, WebXR and glTF

Clone of the Age of Empires II engine 🚀

One framework for creating powerful cross-platform games.

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

A dead simple 2D game engine for Go

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West and Death Stranding 2.

An open source re-implementation of Diablo 2

A Flutter based game engine.

Unity3D Client And C# Server Framework

Cocos simplifies game creation and distribution with Cocos Creator, a free, open-source, cross-platform game engine. Empowering millions of developers to create high-performance, engaging 2D/3D games

Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations withou

A fast entity component system (ECS) for C & C++

Data-oriented and data-driven game engine written in Rust