Half-Life: Opposing Force (1999)
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Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
In 5 collection(s):Franchise - Half-Life
Developer - Gearbox Software
Developer - Valve
Publisher - Sierra
Publisher - Valve