Is Call of Duty Warzone on Steam?
By Jack O'Dwyer

Is Call of Duty: Warzone on Steam is something fans will probably assume if they want to try out the battle royale on PC.
Call of Duty: Warzone on Steam seems like a logical progression. The game was released by Activision and Infinity Ward on nearly every major platform: Xbox One, PlayStation 4, and PC. Steam, being one of the largest collection and gaming launch platforms on the market, should have it available for players. After all, there are a great number of similar free-to-play games like Warzone that already exist on the service.
You've got some grinding to do.
— Call of Duty (@CallofDuty) June 28, 2020
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Is Call of Duty: Warzone on Steam?
No, Call of Duty: Warzone is not available on Steam. Unfortunately, as it is an extra free-to-play branch of another franchise title, Call of Duty: Modern Warfare, it appears that any service lacking that main title will also likely lack its battle royale counterpart.
Beacuse of the ownership status of the game and Activision's recent partnership with Blizzard Entertainment, players can access Warzone via the Battle.net launcher. Whether this will change in the future is unclear, but expect future Call of Duty titles on PC to be distributed through Battle.net alone.