Modular Gaming Open Source Persistent Browser Based Game Framework
Open-Source Classic Tetris
Take the chess graphism, and use it with a chess engine.
Game's list fixer.
LAIR is a Sandbox Dungeon Crawling Game
chess game
Open source rewrite of Heroes 3 engine
SkipBo! server and Qt client
A 2D game engine base on OpenGL and SDL,support for Windows & Linux
An adventure "Legend of Zelda"-ish game
TurboSphere is an easy to learn and powerful JS based game engine.
Library for creating turn-based games with simultaneous moves.