What is Call of Duty: Black Ops. Call of Duty: Black Ops, abbreviated as CoD: BO or simply BO, is the seventh main Call of Duty game, the third main game of the series developed by Treyarch and the sequel to Call of Duty: World at War. The game was published by Activision and for PC, Xbox 360, PlayStation 3, and the Nintendo Wii. Officially announced on April 30, 2010, the game was released on November 9, 2010. Call of Duty: Black Ops differs from most previous installments, which would involve a usual three-country campaign while Call of Duty: Black Ops features two playable countries (Russia and the USA), but only has an American campaign. Players play from the perspective of Captain Alex Mason of the MACV-SOG, Jason Hudson of the CIA, and Russian-born soldier Viktor Reznov of the Red Army. The game also introduced several new features, such as dive-to-prone and the available use of a flashlight on certain weapons. Furthermore, the campaign's playable characters now speak while being controlled by the player. Other Links. Main Youtube Channel:.