Named Game of the Year by over 50 publications, Valve's début title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
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After the Installation you can play the mod with the Custom Game Option.
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ValvePublisher
Sierra EntertainmentEngine
GoldSrcContact
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Related Games
Half-Life
First Person Shooter
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GoldSrc
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Sierra Entertainment
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Valve
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Please make another city map, or my brother will hit me