Since debuting 2003, the Infinity Ward-created Call of Duty series has immersed players in dozens of military conflicts spread across historically accurate settings and futuristic time periods. 2007’s Call of Duty 4: Modern Warfare proved especially pivotal, steering the brand away from its preceding World War 2 engagements while also redefining first-person action and online multiplayer. This is the history of canceled Call of Duty games.