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 ...

Alien Swarm: Reactive Drop is a FREE and open source cooperative top down shooter. The player plays with other marines against hordes of aliens, in order to complete different objectives. In the game, ...

Against his grandfather's orders, Ben Tennyson teams up with the daughter of an old enemy in order to prevent an alien infestation of earth.

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 ...