Today Steam is releasing Alien Swarm, which will cost you nothing. Two years ago, Valve hired a group of modders behind the popular Unreal Tournament 2004 co-op mod called Alien Swarm as ggmania ...

Wow, here's a Friday surprise. Valve just announced that it's releasing a full version of Alien Swarm, a co-operative shooter based on an old Unreal Tournament 2004 mod, next week. And it’s free. Keep ...

All the Latest Game Footage and Images from Alien Swarm Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free ...