Alien Swarm
FreeAlien Swarm is a free-to-play, top-down cooperative shooter developed by Valve. Players control a squad of marines battling hordes of extraterrestrial enemies in various sci-fi environments, emphasizing teamwork and tactical gameplay.
Key Features
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Excellent cooperative gameplay experience emphasizing teamwork.
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Completely free to play with no hidden costs or pay-to-win elements.
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Robust support for community-created content and mods.