3rd Party Video Games Developer: MetalManGames, titles of games
Cross-platform real-time strategy game (3D)
3D Multiplayer Hover Soccer
C++ lightweight cross-platform game engine
Opengate is a Jumpgate remake
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
DOOM / Heretic / Hexen source port with enhanced graphics and UI
3D space trading and combat game
A fun realistic multiplayer free-and-open-source first-person-shooter!
Opensource Game Studio
Character animation system for games and simulations.
Y.A.G.A.C is a free open-source platformer game
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
Free MMORPG
Portable game engine with main focus on point-and-click adventures