A 2D Adventure Game & Engine
Java Gamepad API for multiple platforms
3D Game engine
Multi-threaded 2D Renderer licensed under the Mozilla Public License
C++ game libraries plus server.
multi-kinect system
Modular Gaming Open Source Persistent Browser Based Game Framework
A 2D game engine base on OpenGL and SDL,support for Windows & Linux
TurboSphere is an easy to learn and powerful JS based game engine.
Library for creating turn-based games with simultaneous moves.
Take the chess graphism, and use it with a chess engine.
Minecraft side viewed game made in Java
C++ Framework for slot machine games
A world editor for HGE game engine written in python and uses OpenGL.