Alien Swarm
Alien Swarm: co-op for up to 4 players, on PC, came out 10 July 2010.
Want to play Alien Swarm with friends?
Pick a night together in Lobbli: everyone marks when they are free, and you see which evening works.
Quick answers
Is Alien Swarm co-op?
Yes, Alien Swarm has a co-op mode.
How many players?
Up to 4 players.
Split screen?
No split screen mode is listed for it.
When did it come out?
10 July 2010.
Which platforms?
PC.
What kind of game is it?
Shooter
Who makes it?
Valve
About 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 of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility. Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.