You can change the world that is loaded onto your Realm server any time. Keep in mind that if you change which world is loaded onto your Realm server, all of the progress and changes you have made to that world since your last backup will be lost. If you would like to save your progress in this world, we recommend downloading it before replacing it with a different world. Any friends you have invited to your Realm will still be able to play on your new Realm world. 

To download your current Realm world, follow these instructions:

1. In Minecraft, select Play.
2. Select the Realm slot you want to download.
3. Choose Edit World.
4. Select Download World.
5. When the download is complete, choose Let's Go!

To replace your Realm world, follow these instructions:

1. In Minecraft, select Play.
2. Select the Realm slot you want to replace.
3. Choose Edit World.
4. Select Replace World.
5. Choose the world you want to load onto your Realm server.
6. When the replacement is finished, choose Let's Go!

Your Realm world will now be replaced with your chosen world. You can invite friends to play with you, edit world settings, and play on your new Realm world.