How to Add Extra Worlds to a Minecraft Server

A Minecraft server loads one main world, with its Nether and End. To run more worlds side by side, such as a creative world next to survival, use the Multiverse-Core plugin.

Requirements

Multiverse is a plugin, so your server needs to run Paper (or Folia). If you're on Vanilla, install Paper from Package Manager first. Your existing world carries over.

Install Multiverse-Core

1. Open your server and go to Package Manager.
2. Click Browse packages and search for Multiverse-Core.
3. Click Install and pick the version for your Minecraft version.
4. Restart the server from Console. Package changes apply on the next start.

Create a new world

Run these in Console (or in game as an operator, with /):

mv create creative normal

This creates a normal world called creative. Use nether or end instead of normal for those types, and add -s <seed> for a specific seed.

Move between worlds

mv tp creative
mv tp world

world is your original world. List every world with mv list.

Add a world you uploaded

1. Stop the server.
2. Upload the world folder in Files, next to your main world folder.
3. Start the server and run mv import <foldername> normal.