By November 2013, the game had sold nearly 6 million copies. As a launch game, the Xbox 360 version sold over 250,000 copies in its first week, and had sold over 2 million copies by January 2008. The game drew critical praise, particularly for the graphics, sound and the regenerating health system. Many features were added and changed from the original Call of Duty, notably regenerating health and an icon that indicates a nearby grenade about to explode. It contains four individual campaigns, split into three stories, with a total of 27 missions. The game is set during World War II and the campaign mode is experienced through the perspectives of four soldiers: one in the Red Army, one in the United States Army, and two in the British Army.
Other versions were eventually released for OS X, mobile phones, and Pocket PCs.
Announced by Activision on April 7, 2005, the game was released on Octofor Microsoft Windows, and on Novem as a launch title for the Xbox 360. It is the second installment of the Call of Duty series. Call of Duty 2 is a 2005 first-person shooter video game developed by Infinity Ward and published by Activision in most regions of the world.
