Call of Duty: Black Ops, released in 2010, is a first-person shooter video game developed by Treyarch and published by Activision. It's the seventh title in the Call of Duty series and takes players on covert missions during the Cold War era. Players can enjoy an engaging single-player campaign, an addictive multiplayer mode, and the signature Zombies survival mode. The game is praised for its intense action, deep gameplay, and historical narrative.