AssaultCube

AssaultCube 1.0 is a first-person-shooter game based on the game Cube.
This excellent game formerly ActionCube, sets in a realistic looking environment with different scenarios.

You can choose arctic, desert, depot, gothic, snow, toxic, urban among many other scenarios. You can choose the level and the number of enemy players. Also its settings menu provide full control with the video settings, sound controls, gameplay settings, game controls, etc.
This game stays fast as the arcade game and offers good performance and graphic resolution. The purpose of the game is to stay alive and recollects items: guns, grenades, medical supply (to keep alive), ammunitions, to keep forward on the different stages of the game. This game is all about team oriented multiplayer fun.
The installation is simple and very easy to perform; no additional libraries or programs are needed. The documentation is in the game and any additional information could be getting it in its website. Its website offers you to participate in tournaments and is open to comments and report bugs to be fixed in their next releases.
AssaultCube works on 64-bit MS Windows (Windows 2003 Server/XP/Vista), All 32-bit MS Windows (95/98/NT/2000/XP/Vista/2003 Server) and All POSIX (Linux/BSD/UNIX-like OS’s.