Call of Duty is a first-person video game franchise released by Activision. Since 2003, the first focus has been on games created during World War II. However, over time, the series saw games taking place in modern times, in the midst of the Cold War, futuristic worlds and space. The games were first developed by Infinity Ward, then by Treyarch and Sledgehammer Games. Several developers have made several spinning and hand games. The last title, Call of Duty: Modern Warfare, was released on October 25, 2019.

Initially, the series focused on World War II, where Infinity Ward developed the first (2003) and second (2005) titles in the series, and Treyarch the third (2006). Call of Duty 4: Modern Warfare (2007) introduced a new, modern setting and was the breakthrough title of the series that created the subseasons of Modern Warfare. The legacy of the game also influenced the creation of a revised version released in 2016. Two more recordings were released, Modern Warfare 2 (2009) and 3 (2011). The subseasons smoothly restarted with Modern Warfare in 2019. Infinity Ward has also developed two games outside the Modern Warfare subset, Ghosts (2013) and Infinite Warfare (2016). Treyarch made the last game of World War II, World at War (2008), before releasing Black Ops (2010) and then created the Black Ops sub-sisters. Three more shots were taken, Black Ops II (2012), III (2015) and 4 (2018). Sledgehammer Games, co-developers of Modern Warfare 3, also developed two titles, Advanced Warfare (2014) and World War II (2017).

The series has sold over 250 million copies since February 2016. Sales of all Call of Duty games were $ 15 billion. Other products from the franchise include a series of action figures designed by Plan-B Toys, a card game created by the Upper Deck Company, sets of Mega Blocks from Mega Brands and a series of mini comics published by WildStorm Productions.