Call of Duty: Black Ops is a 2010 first-person shooter computer game developed by Treyarch and published by Activision. It was released worldwide in November 2010 for Microsoft Windows, the PlayStation 3, Xbox 360, and also Wii, with a different version for Nintendo DS developed by n-Space. Aspyr later released the ready OS X in September 2012. It is the 7th title in the Call of Duty series and the third to be established by Treyarch. It acts as the sequel to Call of Duty: World at War.Set in the 1960s during the Cold War, the video game's campaign complies with CIA operative Alex Mason as he tries to remember certain memories in fight in order to locate a numbers station. This station is due to send programs to sleeper representatives that are bound to make use of chemical weapons throughout the United States. Mason and also CIA operative Jason Hudson are the video game's major playable personalities, along with Red Military soldier Viktor Reznov in one mission. Areas featured...