Call of Duty: Black Ops is a first-person shooter video game developed by Treyarch, published by Activision and released worldwide on November 9, 2010 for Microsoft Windows, Xbox 360, PlayStation 3, Wii consoles, with a separate version for Nintendo DS.
The game is the seventh installment of the Call of Duty series, and the first to be set in the Cold War and the fifth to be set in World War II.
Within 24 hours of going on sale, the game sold more than 7 million copies, 5.6 million in the U.S. and 1.4 million in the UK, breaking the record set by its predecessor Modern Warfare 2 by some 2.5 million copies.
The player assumes the role of various characters during the single-player campaign, changing perspectives throughout the story. The playable characters are special forces operatives conducting black operations behind enemy lines. In this way, the player's characters have their own traits such as voices and shadows.
Players can customize their weaponry in the game, as seen with this customized FAMAS.The online multiplayer mode of Black Ops usually revolves around two teams on a specific mission. For example in Team Deathmatch the team with the most kills wins, while in Capture the Flag, players take the other team's flags and return it to their own base.
A zombie cooperation mode, titled "Zombies", is included in the game. Originally featured in World at War, it was revamped to be included into Black Ops. It is a four-player online and two-player split screen co-op mode (which can also be unlocked online). In the map "Five", players take the roles of John F. Kennedy, Richard Nixon, Robert McNamara, and Fidel Castro as they fight zombies at The Pentagon.There is one map based on the original game called Kino der Toten ("Theater/Cinema of the Dead" in German). This map features the characters from World at War -- Edward Richtofen the German, Tank Dempsey the American, Takeo Masaki the Japapense , and Nikolai Belinski the Russian
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