Solar2D Game Engine main repository (ex Corona SDK)
Desktop/Android/HTML5/iOS Java game development framework
Memory Efficient Serialization Library
Multi-platform 2D and 3D game engine
Play! - PlayStation2 Emulator
websocket and http client and server library, with TLS support
Open source Cardboard SDK and samples
Xbox 360 Emulator Research Project
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
An open source C++ game engine
Orx: Portable Game Engine
A promising chess program
3D modeler, 3D game maker, 3D demo maker
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Urho3D Game engine
MAME Android Emulator.
A cross-platform 2D game engine
Highly customizable library for procedural world generation
The Atomic Game Engine is a multi-platform 2D and 3D engine
Realtime 3D engine for game development
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap
This is a hacking style game set in the early '80s