The Original

The original Call of Duty debuted in 2003 and was one of the best first-person shooters to ever hit the gaming scene. Outside of using one of the more fascinating pieces of world history as the platform for this game, Infinity Ward developed a revolutionary AI system to further immerse the player. As a result, players would literally jump into battle with AI allies to take down the enemy as opposed to going lone wolf like in so many titles before.