Cross-Platform C++ 2D/3D game engine
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
A free Chess program for Windows with a large set of features
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
3D Procedural Game Engine Using OpenGL
Simple and light-weight 3D game engine
Gideros Release version
Desktop/Android/HTML5/iOS Java game development framework
Lightweight, high-performance HTML renderer for game developers
Open source software calculating industrial noise in the environment
Stride (formerly Xenko), a free and open-source cross-platform C# game
Flax Engine, multi-platform 3D game engine
Free game engine for development of desktop, mobile, and web games
3D space trading and combat game
3D Game engine with editor
Emscripten: An LLVM-to-WebAssembly Compiler
One framework for creating powerful cross-platform games
A promising chess program
Amateur 3D Game Engine
dhewm 3 main repository
Zig game engine & graphics toolkit
Multi-platform 2D and 3D game engine
Game engine supporting many 3D/2D formats and graphic effects