Call Of Duty (short form: "CoD") is a first person and third-person shooter video game series. There are 24 games in total, not counting add-ons and DLCs. The first 8 games, excluding "Modern Warfare", are about World War II. The "Modern Warfare" series takes place in present times. "Call Of Duty: Black Ops" takes place in the secret missions of the Cold War. It was created by Treyarch and published by Activision. The majority of the games were published by Infinity Ward, and some were developed by Treyarch. There are "Call of Duty" games for the Gamecube, Xbox, PlayStation, PlayStation 2, PlayStation 3, PlayStation Vita, PlayStation 4, Xbox 360, Xbox One, PC, Nintendo Wii, and the Nintendo DS. The games are rated Teen or Mature for blood, violence and strong language.