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Gray Matter Interactive Studios, Inc.


Gray Matter was a game development company founded by the former employees of Xatrix with the help of Activision. They were located in Southern California on the westside of Los Angeles. In 2002 it was acquired by Activision and in 2005 merged with Treyarch.


Call of Duty 2: Big Red One(2005)
Call of Duty: United Offensive(2004)
Return to Castle Wolfenstein: Operation Resurrection(2003)
Return to Castle Wolfenstein: Tides of War(2003)
Return to Castle Wolfenstein(2001)


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