Call of Duty: Modern Warfare 3 is a 2011 first-person shooter video game, jointly developed by Infinity Ward and Sledgehammer Games and published by Activision. The game was released worldwide in November 8 2011 for Microsoft Windows, the Xbox 360, PlayStation 3, Wii, and OS X. It is the sequel to Call of Duty: Modern Warfare 2 (2009), serving as the third and final installment... Wikipedia