Alien Arena 2007 is a multiplayer online deathmatch game based on the GPL id source code. Powered by version 6.10 of the CRX engine, this game features incredibly smooth and fast game play with next-generation engine features such as shaders, real-time lighting and shadows, lensflars, light bloom and reflective water. The game over thirdy maps, nine weapons (with alt-fire modes), eleven player characters, mutaters, six game play modes, and an in-game server browser. With modes like Team Core Assault, Cattle Prod, Duel, Deathball, Capture the Flag, and All Out Assault, Alien Arena has an endless replayability factor. Version 6.10 includes a number of new maps, new weapon, and major engine enhancements.