Alien Arena 2008 is a multiplayer online deathmatch game based on the GPL id source code.
Powered by version 7.1 of the CRX engine, this game features incredibly smooth and fast game play with next-generation engine features such as shaders, real-time per-pixel and per-vertex lighting and shadows, lensflares, light bloom, weather, and reflective water.
The game includes over 40 levels, nine weapons (with alt-fire modes), five 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 7.1 includes new maps, new models, new textures, and major engine enhancements.