Call of duty is a game where you can play the story mode or play online multi-player WITH FRIENDS AND RANDOM PEOPOL.
There are different types of Call of Duty games to get to them to go to the other pages to read information about the other Call of duty.
Call of Duty is rated (T) Which means teens age 13 and up are able to play these types of games.
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. Some games have been developed by Gray Matter Interactive, Nokia, Exakt Entertainment, Spark Unlimited, Amaze Entertainment, n-Space, Aspyr, Rebellion Developments, Ideaworks Game Studio, Sledgehammer Games, and nStigate Games. The games use a variety of engines, including the id Tech 3, the Treyarch NGL, and the IW 5.0.
As of April 2015, the Call of Duty series has sold over 175 million copies. As of March 31, 2012 there are 40 million monthly active players across all of the Call of Duty titles, with 10 million users of the online service Call of Duty: Elite and 2 million paying annual members. Over 1.6 billion hours of online gameplay have been logged on Modern Warfare 3 since its 2011 release. Sales of all Call of Duty games topped 10 billion U.S. Dollars.
As of April 2015, the Call of Duty series has sold over 175 million copies. As of March 31, 2012 there are 40 million monthly active players across all of the Call of Duty titles, with 10 million users of the online service Call of Duty: Elite and 2 million paying annual members. Over 1.6 billion hours of online gameplay have been logged on Modern Warfare 3 since its 2011 release. Sales of all Call of Duty games topped 10 billion U.S. Dollars.