A dead simple 2D game engine for Go
GemRB is a portable open-source implementation of the Infinity Engine
A cross-platform port of Hexen II game.
computer opponent for the board game Blokus
3D driving simulation based on Open Dynamics Engine
realistic driving simulation + functions for 2D/3D graphics
Volume 2 of ChaosEsque Anthology
DOOM / Heretic / Hexen source port with enhanced graphics and UI
A traditional top-down OpenGL car racing game
Cross-platform port of Arx Fatalis, a first-person role-playing game
Game engine supporting many 3D/2D formats and graphic effects