Why settle for just one world? With Fern's Mission Control, you can keep an entire library of maps on a single server. Whether you want to switch from your main Survival world to a Creative testing ground or try out a new Adventure map with friends, it only takes a couple of clicks, with no complicated "Multiverse" plugins required.

The World Manager UI

The easiest way to see everything you have saved is through the dashboard:

Open your server in Mission Control.
Go to the Files tab.
Click the Worlds sub-tab.

Your active world (the one currently loaded) will have a bright green Active badge next to it. [image - Mission Control > Worlds | Active Status | Close-up of the 'Active' green badge next to the current live world]

How to Add a New World

If you have a world folder from a different server or a single-player save:

Stop your server first (it’s much safer this way).
Zip up your world folder on your computer. Make sure the level.dat file is right inside the zip, not buried in three other folders.
In the Worlds manager, hit Upload and pick your zip file.
Fertig! Your new world will show up in the list.

Switching Between Worlds

Stop the server.
Click the world you want to play in.
Hit the Activate button.
Start your server back up.

Things to Keep in Mind

One at a Time: By default, you can only have one world active at once. If you want players to be able to teleport between worlds simultaneously (like a "Hub" and a "Survival"), you'll need a plugin like Multiverse-Core.
The Nether & End: Every survival world has its own Nether and End dimensions. They are tied to the world folder, so you can't easily "swap" just the Nether without moving the whole world.
Save Some Space: Keep an eye on your disk space in the sidebar. Multiple worlds can add up fast!

Trying to merge two different worlds into one? Join our Discord and the community can help you with the tools you'll need.