Call of Duty Black Ops is a first person shooter developed by Treyarch and published by Activision for the Microsoft Xbox 360 in the United States. The title launched on November 9 2010 and was later added to iOctavio.com on 2010-12-01. The user originally categorized the game as a first person shooter and placed it within the first person shooter genre to aid web searches. The campaign follows a Cold War narrative that spans multiple continents and features protagonists Alex Mason Frank Woods and Jason Hudson as they uncover a global conspiracy involving mind control and a secret Soviet project. The story is presented through a series of cinematic missions that blend stealth action and large scale combat set pieces. The multiplayer component introduced a revamped create a class system called Create a Class 2.0 which allowed players to customize weapons perks equipment and scorestreaks with greater depth. New game modes such as Wager Matches including Gun Game One in the Chamber and Sticks and Stones added competitive variety. The Theater mode enabled players to record edit and share gameplay clips directly from the console. Split screen support allowed two players to compete locally on the same screen. The Zombies cooperative mode debuted with maps like Kino der Toten Five Ascension Call of the Dead and Moon each offering unique mechanics Easter eggs and escalating difficulty. The Xbox 360 version runs at a stable sixty frames per second at a native resolution of 720p upscaled to 1080p and includes a full set of achievements tied to campaign progress multiplayer milestones and Zombies challenges. Post launch downloadable content packs named First Strike Escalation Annihilation and Rezurrection expanded the map roster and added new Zombies experiences. The game received widespread critical acclaim with a Metacritic score of eighty seven out of one hundred and achieved record breaking sales surpassing five million copies in the United States within the first twenty four hours and over thirty million units worldwide. The title is widely regarded as a high point in the Call of Duty franchise for its narrative ambition multiplayer innovation and enduring cooperative Zombies legacy.