Tool to statically recompile N64 games into native executables
An unofficial PC port of the Xbox 360 version of Sonic Unleashed
Recreation of the classic Grand Theft Auto III game executable
Solar2D Game Engine main repository (ex Corona SDK)
Desktop/Android/HTML5/iOS Java game development framework
A lightweight game server framework implemented with Actor Model
3D Procedural Game Engine Using OpenGL
Free game engine for development of desktop, mobile, and web games
Source code repository of the FreeOrion project
Descent 3 by Outrage Entertainment
Command and Conquer: Red Alert original source code
0 A.D. is a free, open-source, cross-platform real-time strategy game.
3D modeler, 3D game maker, 3D demo maker
A simulator for drones, cars and more, built on Unreal Engine
A fork of dhewm3 with an emphasis on modernisation and vanilla Doom 3
3D C++ Game Engine - yet another open source game engine
KlayGE is a cross-platform open source game engine
A cross-platform 2D game engine
The Atomic Game Engine is a multi-platform 2D and 3D engine
Advanced rhythm game for Windows, Linux and OS X
A public domain cross platform 3D game
Open Game Bootstrap
DirectX 1-11 to OpenGL wrapper
A traditional top-down OpenGL car racing game
Simple Console Arcanoid