Call of duty is a first person video game franchise

The series began on the PC, and later expanded to consoles and handhelds. Several spin-off games have also been released. The earlier games in the series are set primarily in World War II, including Call of Duty, Call of Duty 2, and Call of Duty 3. Beginning with Call of Duty 4: Modern Warfare, which is set in modern times, the series has shifted focus away from World War II The Call of Duty games are published and owned by Activision. While the studio Infinity Ward primarily still develops them, Treyarch has also developed several of the titles with the release of the studios' games interlaced with each other..