Call of Duty: Black Ops by Treyarch takes about 10 hours to beat the main story, or roughly 48 hours to complete 100%.
Call of Duty: Black Ops is the seventh main Call of Duty game and the sequel to Call of Duty: World at War. The game 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. Several new features are also introduced, 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. Extra game included within: + Zork (Apple II)