General Purpose Engine for Graphic Adventures.
A virtual DGT board using optical detection
Play Sudoku on your Mobile and Windows
Classic America's Army
A dice game similar to that other dice game you can buy at the store.
A Game Similar to Mastermind
Defeat all the beasties to claim victory!
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
DOOM / Heretic / Hexen source port with enhanced graphics and UI
Control your Linux PC with a standard foot pedal
RTSish Game Engine
Pioneers - The Settlers of Catan
ZED OS the clone of Windows XP