Introduction : Call of Duty is a 2003 first-person shooter video game developed by Infinity Ward and published by Activision. The game takes place during World War II. It is based on the Quake III Team Arena engine. It also had an expansion pack called Call of Duty : United Offensive, produced by Activision and developed by Gray Matter Interactive having contributions from Pi Studios as well. It has single player as well as campaign missions. The game lets you play as three different soldiers f…
