Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing and/or using this software.
From COR Entertainment:
Alien Arena: Tactical is a brand new offshoot of the Alien Arena game that involves co-op team play. Pitting humans against aliens, players must work together to disable their opponents bases, each player class having different, and complimentary abilities. This game is slower paced than the classic Alien Arena deathmatch game, and has a different set of physics and rules that are geared more towards a tactical military type game. Still using the CRX Gaming Engine, the game runs smoothly on any modern computer, providing beautiful visual effects and ragdoll physics. This is a very early Alpha stage of the game, many other features will be included as the game progresses and updates.