Call of Duty is the first-person shooter game that started in 2003 it first focused on World War 2 over time this series set in the cold war futuristic world and outer space. This game was first developed by Infinity Ward in 2003 then also by Treyarch Games and Sledgehammer Games Several spin and handhold games were made by other developers. The most recent title Call of Duty Black Ops was released on November 13, 2020, This series was originally focused on the 2nd World War setting with Infinity ward was first developing in 2003 and second in 2005 with the title Treyarch developing the third in 2006. The Call of Duty The modern warfare in 2007 introduced a new modern setting and proved to be a breakthrough title for the series creating the modern warfare dor the series The game’s legacy also influenced the creation of a remastered version released in 2016. The two entries the Modern warfare 2 in 2009 and 3 in 2011. The series received an update with modern Warfare in 2019. Infinite ward has also developed the two games outside of the Modern Warfare sub-series Ghost in 2013 and infinite war in 2016 Treyarch made their last sub series world war 2 based games World at War in 2008 before releasing Black Ops in 2010 and subsequently creating the Black Ops series four other entries were Black Ops 2 in 2012,3 in 2015,4 in 2018 and Cold War in 2020 was made. As of April 2021, the series has sold over 400 million copies with new games released annually in the series annually to blockbuster level series the series was verified as the bestseller by the Guinness book of records as the best selling first shooter game series it also is a most successful game franchise created by the United States and the third best selling video game of all time. I look at a survey this game has more than 110 million players and more than 400 million downloads every day and its players and downloads are increasing at the rate of 10 and 30 percent respectively. This game is available for android and IOS users. The Call of Duty also found the 3rd spot in the top 10 games of the world at the end I would like to say that as the name of my article Call of Duty The best game this article is a small effort to show that.