BZFlag - home BZFlag is a free multiplayer multiplatform 3D tank battle game. The name stands for Battle Zone capture Flag. It runs on Irix, Linux, *BSD, Windows, Mac OS X and other platforms. It's one of the most popular games ever on Silicon Graphics machines in linux > gpl gameswith linuxgplgamesbzflagfreemultiplayermultiplatformtank
Cube Cube is an open source multiplayer and singleplayer first person shooter game built on an entirely new and very unconventional engine. Cube is a landscape-style engine that pretends to be an indoor FPS engine, which combines very high precision dynamic occlusion culling with a form of geometric mipmapping on the whole world for dynamic LOD for configurable fps & graphic detail on most machines in linux > gpl gameswith linuxgplgamescubeopensourcemultiplayersingleplayerby 9 users