Call of Duty by Year in Order Call of Duty by Year in Order Activision has been releasing first-person shooters every year for more than 20 years, and Call of Duty is a well-known brand. The majority of Call of Duty games have been significant fall releases on various platforms, however some of the franchise's entries were obscure and platform-specific. World War II and authenticity as a military shooter were the main themes of the first several Call of Duty games, but as the brand has developed over time, it has become more complicated and frequently deviates from a mil-sim aesthetic . Third game modes, robots, spaceships, jetpacks , and occasionally surreal fictional campaigns have all been added to Call of Duty, which has moved away from its original military roots and into sci-fi and fantasy. The first Call of Duty game was developed by Infinity Ward , but today's current games are a collaborative effort across multiple Call of Duty studios: Treyarch , Raven Software , Infinity Ward, Sledgehammer Games , Been…