Game Name: Call of Duty Modern Warfare (Warzone Only)
Official Website: Call of Duty: Warzone | Home
Game Engine: Blizzard
Game Genre: Shooter
Anti-Cheat: IDK
Online Statistics: Call of Duty: Warzone now has more than 50 million players one month after launch - The Verge (Only thing i have found)
Video: Call of Duty Modern Warfare: Warzone Battle Royale Solo Gameplay (No Commentary) - YouTube