The battle royale mode, Blackout, is completely inaccessible offline. It requires a live server connection and cannot be populated with bots.
The closest replacement for a standard campaign is the , which focuses on the backstories of the game's multiplayer characters (Specialists). Call Of Duty Black Ops 4 Offline Gameplay
You can play Zombies locally with up to 4 players, allowing for a nostalgic couch co-op experience. The battle royale mode, Blackout, is completely inaccessible
Black Ops 4’s offline appeal centers almost entirely on Zombies and local split-screen; the removal of a single-player campaign means solo narrative experiences are absent. If you value couch co-op and competitive local play, Black Ops 4 still delivers; if you want a deep single-player story, look elsewhere in the franchise or other shooters. The battle royale mode