Cross-Platform C++ 2D/3D game engine
3D Procedural Game Engine Using OpenGL
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Simple and light-weight 3D game engine
Desktop/Android/HTML5/iOS Java game development framework
Open source software calculating industrial noise in the environment
Free game engine for development of desktop, mobile, and web games
Flax Engine, multi-platform 3D game engine
3D Game engine with editor
Multi-platform 2D and 3D game engine
dhewm 3 main repository
Emscripten: An LLVM-to-WebAssembly Compiler
Parabator 2 - Free 3d board game
GemRB is a portable open-source implementation of the Infinity Engine
Software version control visualization
Open source Cardboard SDK and samples
0 A.D. is a free, open-source, cross-platform real-time strategy game.
High-efficiency minimalist C++ wrapper for OpenGL 4.3
crossplatform multithreaded object-oriented render and audio engine
A free Chess program for Windows with a large set of features
3D modeler, 3D game maker, 3D demo maker
Orx: Portable Game Engine
An isometric arcade-style game of skill, puzzles and exploration