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. It is the second installment of the Call of Duty series. Announced by Activision on April 7, 2005, the game was released on October 25, 2005 for Microsoft Windows, and on November 22, 2005 as a launch title for the Xbox 360. Other versions were eventually released for OS X, mobile phones, and Pocket PCs.