The series originally focused on the World War II setting, with Infinity Ward developing Call of Duty (2003) and Call of Duty 2 (2005) and Treyarch developing Call of Duty 3 (2006). Call of Duty 4: Modern Warfare (2007) introduced a modern setting, and proved to be the breakthrough title for the series, creating the Modern Warfare sub-series; a Modern Warfare remastered version released in 2016. Two other entries, Modern Warfare 2 (2009) and Modern Warfare 3 (2011), were made. The sub-series received a reboot with Modern Warfare in 2019, Modern Warfare II in 2022, and Modern Warfare III in 2023. Infinity Ward have also developed two games outside of the Modern Warfare sub-series, Ghosts (2013) and Infinite Warfare (2016).

Call of Duty: Devil's Brigade was a canceled first-person shooter for the Xbox 360 developed by Underground Entertainment. The game was set in World War II, mainly focusing on the Italian Campaign. [64] Call of Duty: VietnamMahardy, Mike (August 11, 2014). "Call of Duty: Advanced Warfare 'Day Zero' Grants 24-Hour Early Access". IGN. Archived from the original on August 13, 2014 . Retrieved August 14, 2014. Martindale, Jon (April 26, 2017). "Watch the just-unveiled 'Call of Duty WWII' trailer right here". Digital Trends. Archived from the original on April 26, 2017 . Retrieved April 26, 2017. TWO INCREDIBLE MILESTONES: CALL OF DUTY®: WARZONE™ REACHES 100 MILLION PLAYERS, PREMIUM CALL OF DUTY® GAME SALES ECLIPSES 400 MILLION." April 2021. By the end of the game you visit the Battle of the Bulge for some reason (despite the sci-fi setting) and there’s a horde of zombies to defend yourself from. The tonal whiplash and the fact these elements aren’t handled that well puts a dampener on a campaign with solid ideas.

Best map: Warhawk drops you in a town in Nebraska with plenty of buildings for snipers to set up in, but alleyways are often filled with stealthy players setting up ambushes and flanksMakuch, Eddie (June 5, 2014). "Call of Duty: Advanced Warfare Uses Version of "Avatar 2" Facial Animation System". GameSpot. Archived from the original on June 12, 2014 . Retrieved June 28, 2014. McWhertor, Michael (April 10, 2020). "Call of Duty: Warzone hits 50M players in first month". Polygon. Archived from the original on October 23, 2021 . Retrieved April 21, 2020.