In late 2004, the N-Gage version was developed by Nokia and published by Activision. The Mac OS X version of the game was ported by Aspyr Media. The game follows the American paratroopers, British paratroopers and the Red army. Call of Duty was accompanied in September 2004 by an expansion pack, Call of Duty: United Offensive, which was also produced by Activision, but developed by Gray Matter Interactive with contributions from Pi Studios. The game simulates the infantry and combined arms warfare of World War II.
The game was developed by Infinity Ward and published by Activision. Call of Duty is a computer/video game based on the Quake III Arena engine (id Tech 3), and was released on October 29, 2003.
