Valve will release Alien Swarm - a four-player, co-operative, top-down shooter - on Steam for free today. The PC game is an entirely new version of an old mod for Unreal Tournament 2004. The ...
A mod that turns one of Valve's games into a real-time strategy set in the Half-Life 2 universe has been released on Steam after six years of development. Lambda Wars, a mod for Valve's 2010 top-down ...
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