Cross-platform real-time strategy game (3D)
A free 3D game engine to create games and realtimes scenes for Windows
Heros of Jin Yong 3D Remastered
An isometric arcade-style game of skill, puzzles and exploration
3D puzzle game based on Kula World and Cubosphere
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Cross-platform 2D and 3D game engine
3D-Accelerated open-source DOOM engine
EDGE is an advanced DOOM source port
A 3D Game Framework
3d Reversi game
Turn based Civ-like strategy game
action/combat flight sim
sauerbraten with LuaJit2 scripting
Scriptable frontend for media applications.