Alien Shooter 2: Conscription Released on Steam

Fight the monsters invasion as a private
Sigma Team and Valve have announced that Conscription, the first official add-on for Alien Shooter 2, is now available on Steam and 20% off until 10AM PST Thursday, May 25th. Alien Shooter 2: Conscription offers 10 new missions with alternative story and additional quests, new monsters types and improved graphics.
A playable demo can be found here.