Flax Engine, multi-platform 3D game engine
Multi-platform 2D and 3D game engine
Solar2D Game Engine main repository (ex Corona SDK)
UCI chess engine
Recreation of the classic Grand Theft Auto III game executable
Command & Conquer: Remastered Collection
Descent 3 by Outrage Entertainment
Multi Theft Auto is a game engine
Write your game with TypeScript in UE or Unity
3D Game engine with editor
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Diablo build for modern operating systems
Community effort to maintain and improve Jedi Academy (SP & MP)
Free game engine for development of desktop, mobile, and web games
Source code repository of the FreeOrion project
3D Procedural Game Engine Using OpenGL
lua dev plugin for unreal engine 4 or 5
Action RPG that's easy to mod
The SCID 5 format in a clean, deterministic, modular architecture
Orx: Data-Driven Game Engine
Chess Database and PGN viewer
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Maze creation, solving, exploration, and analysis
OgreWin3D