Call of Duty: Warzone is a free-to-play battle royale video game released on March 10, 2020, for PlayStation 4, Xbox One, and Microsoft Windows. The game is a part of the 2019 title Call of Duty: Modern Warfare but does not require purchase of it. Warzone allows online multiplayer combat among 150 players, although some limited-time game modes support 200 players. Codenamed Operation: Rapid Sunder, it is set in the fictional city of Verdansk, which is loosely based on Donetsk city in Eastern.