For those who have a PC and Steam, Alien Swarm, previously a mod on the Unreal Tournament 2004 engine, has just been released for free. Alien Swarm is a top down shooter that can be played cooperatively with up to four players. Sadly, it’s not available for Mac users at the moment. Apparently, the same team behind this project also worked on Left 4 Dead and the Portal series, both of which are oozing with quality. Did we mention it’s free? We like free and we’re sure you do, too.

[Source: 1UP.com]