https://www.windowscentral.com/gaming/operation-deadbolt-brings-zombies-to-call-of-dutys-modern-warfare-series-for-the-first-time
Treyarch Studios is behind MW3's open world Zombies mode | Windows Central
Sep 20, 2023 - Zombies have long been part of the Call of Duty franchise, but they will soon appear for the first time in the Modern Warfare series.
treyarch studios