How to start a new world on a Core Keeper server

Core Keeper uses numbered world slots. Selecting an unused slot creates a separate world while leaving the existing slot available.

1. Create a backup using How to back up and restore a Core Keeper server, then stop the server.
2. Open ServerConfig.json in the text editor.
3. Change world to an unused slot number from 0 to 29.
4. Set a recognisable worldName.

   

5. Save the file and start the server. Join once and allow the new world to save.

"world": 1,
"worldName": "Fresh Core Keeper World"

To return to the previous world, stop the server and restore its earlier world slot number. A world-data folder may not appear until a player has joined and the first save has completed.