अपनी भाषा में प्लॉट जोड़ेंCall of Duty: Black Ops 4 is the first entry in the first-person shooter series to contain only a multiplayer mode, and a new battle royale mode called Blackout.Call of Duty: Black Ops 4 is the first entry in the first-person shooter series to contain only a multiplayer mode, and a new battle royale mode called Blackout.Call of Duty: Black Ops 4 is the first entry in the first-person shooter series to contain only a multiplayer mode, and a new battle royale mode called Blackout.