Alien Arena: Combat Edition

Alien Arena is a multiplayer online deathmatch game that features incredibly smooth and fast game play with features such as ragdoll physics, real-time per-pixel and per-vertex lighting and shadows, skeletal models, lensflares, light bloom, weather, and GLSL shader effects on all surfaces.

The game includes over 60 levels, ten weapons (with alt-fire modes), eight player characters, an in-game server browser and IRC client. With modes like Team Core Assault, Tactical, Cattle Prod, Duel, Deathball, Capture the Flag, All Out Assault, as well as numerous game mutators, Alien Arena has an endless replayability factor.