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4 unique classes and 8 unique characters.Over 40 weapons and equipment with countless loadout configurations.Unlock persistent items by gaining levels.

Tactical, 4 player co-op action game with a top-down perspective.

Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine. 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.Īlong with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. With your friends, form a squad of four distinct IAF Marine classes. Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community.Īvailable free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics.

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