High Moon Studios, Activision Shanghai, Demonware, and Sledgehammer are all providing additional support for Cold War, with Canadian studio Beenox leading development on the PC version, as it previously did with Black Ops 4. Its most recent non-Call of Duty game was the 2010 time-bending shooter Singularity. Raven Software, meanwhile, is a veteran studio – having helmed the Soldier of Fortune series along with Jedi Knight: Jedi Outcast/Academy – and has served as a Call of Duty support studio for the last decade. Treyarch is the studio responsible for all four previous Black Ops games, as well as introducing Call of Duty’s now-famous Zombies mode in 2008’s World at War. The decision was reportedly made, at least in part, due to a conflict between Sledgehammer and Raven Software, the studio handling Cold War’s campaign.

Sledgehammer Games, which most recently led development on 2017’s Call of Duty WWII, was originally handling this year’s entry as expected - that is until mid-2019, when Activision moved development to Treyarch.

2020 sees the Call of Duty reins return to Treyarch Studios, breaking the three-studio rotation Activision has implemented since 2012.

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