Call of Duty: Modern Warfare 2
The game offers three game modes: a campaign single-player mode (lasting about 6 hours), a "Special Ops" mode for replay value over the campaign where the player or players can collect stars (like in a Mario game), and a multiplayer mode (online and offline). The online mode is why most people play Call of Duty. The previous Call of Duty 4: Modern Warfare broke World of Warcraft'''s record of 11 million people online by 2 million on Xbox 360 alone. Call of Duty: Modern Warfare 2 managed to sell 1.2 million copies in its first day of release in the UK.