Call of Duty: Warzone was a free-to-play battle royale video game developed by Raven Software and Infinity Ward and published by Activision. The game was released on March 10, 2020, for PlayStation 4, Windows, and Xbox One as a part of 2019's Call of Duty: Modern Warfare and was subsequently connected to 2020's Call of Duty: Black Ops Cold War and 2021's Call of Duty: Vanguard,... Wikipedia