sauerbraten.org

Singleplayer (2 game modes, savegames) and multiplayer (12 game modes) first person shooter, built as a major redesign of the Cube FPS. Possibility of in-game map editing (even multiplayer). Central server list. Demo recording. Uses OpenGL and SDL. (ZLIB license) [win32, linux and bsd (x86), macosx (ppc)]