Call of Duty
Call of Duty is a FirstPersonShooting game series which first title was released on October 29, 2003. Since then 11 main titles and couple of small or console only versions have been released with the latest one named "Call of Duty: Advance Warfare. The video Game series began on the PC with Call of Duty but later games were released on consoles and some spin off games made for hand held devices. The first few games on release were based upon World War II until Call of Duty 4 was released where they start to be based on may different time periods such as the future for Call Of Duty: Advanced Warfare and Call of Duty: Black ops II and other games based on the past like Call of Duty: Black Ops was based in the Cold War.
The best selling Call of Duty was Call of Duty: Modern Warfare 3 with 26.5 million copies sold and more the 1.6 Billion hours have been played online on since its release.