You cannot have your offline saves online and you cannot have online saves in offline mode. This game has 2 modes offline mode and online mode. If you wish to play the single player campaign online, you will need to start a new game.
According to an article by VGR, they state that “Call of Duty: Black Ops 4 is no exception. The game’s three Zombies maps (four if you opt for the Season Pass) are all available offline. As in multiplayer, bots can be added to fill up your party if you wish to play alone.”
Overview. Call of Duty®: Black Ops III – Zombies Chronicles is available now on PS4™, Xbox One and Steam.
Black Ops 3 adds the ability to add bots in offline multiplayer.
Call of Duty: Black Ops 3 can be played entirely online, and for the first time each of the offerings has its own unique XP and player progression systems.
You can actually play multiplayer offline while a mod is loaded. Create a “mod” folder in your Black Ops 3 folder and create an empty “Offline MP” folder (or whatever name you like) there. You can now select this mod in the “Mod” menu and play multiplayer offline.
Because it is so multiplayer oriented, there is no way to play it offline. However, it is possible to play Blackout in split-screen mode, which is quite an achievement. Two players can play together in Blackout and both must be logged in, with one of them having a PS Plus subscription.
The 2019 Modern Warfare reboot had a full offline campaign, while the PC version of Black Ops Cold War can only be played online, regardless of what you’re doing. p>
Of course, online multiplayer is not available while playing Call of Duty: Black Ops 4 offline. However, players can still compete against their friends in split-screen matches. All maps are playable offline and can be tackled in any game mode.
The PlayStation 3 and Xbox 360 versions of Call of Duty: Black Ops III feature only multiplayer and Zombies gameplay, but do not include any co-op or single player campaign game modes. p>
For the first time ever, Black Ops 4 has added the ability to add bots to play with zombies offline and in private matches. Players have the option to add between 1 and 3 bots during a game session.
In Black Ops 3, you can play both Campaign and Zombies modes cooperatively. The campaign supports up to two players locally with a horizontally split screen, while Zombies mode supports up to four players. Both modes support up to four players online.
Is Black Ops 3 cross-platform on PS4 and PS5? Yes. The game supports cross-play between PS4 and PS5. This means if you have a PS4 and your friend has a PS5, you can both play multiplayer together.
PSA: BO3 DOES NOT SUPPORT OFFLINE MP-BOTS OR ZOMBIES! Call of Duty has always been great fun online, but all types of players play differently.