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.
Updates to Alien Swarm have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:The Vindicator’s grenade explosion effect should no longer crash users running a GTX260 graphics card.Fixed a bug where marines would continue to be buffed by the Damage Amp if they were standing in it when it expired.Fixed ammo usage on the Tesla Cannon to properly decrease 4 times a second instead of 2 (doubled clip size to account for this).Rebalanced Tesla Cannon’s damage to encourage it to be used more as a support weapon.Tesla Cannon will now use ammo slowly even when it isn’t damaging something.Fixed Unicode text chat