Alien Swarm
Jul 19, 2010 - Co-operative multiplayer game and complete code base available for free. ... 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 ...
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Dead Space (Series)
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Killing Floor
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Killing Floor is a survival horror total conversion set in London, England. In a laboratory under the city, a series of human experiments in cloning and biological augmentation are being conducted
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