Reset your world or change the seed

Wipe your Minecraft Java world for a fresh start, or regenerate it from a specific seed, while leaving your plugins and configs untouched.

2 min read · Updated Sep 24, 2026 · By GuavaHost Team

Sometimes you want a clean slate: a brand new world, or the same world regenerated from a different seed. This guide walks through both. It leaves your plugins and configs intact and only replaces the world itself.

Important: this permanently deletes your current world

Deleting the world folders removes everything built in that world for good. There is no undo. If there is anything you want to keep, back it up first.

1. Click Stop at the top of the server page.
2. Open Backups in your server's menu and click Create backup, or download the world folder from the Files tab to your own computer. The Backup slots bar on the Backups page shows how many you have left.

Only move on once you are sure you have a copy, or you are certain you do not want the old world.

Reset the world

1. Click Stop at the top of the server page if it is still running.
2. In the Files tab, delete these three folders: world, world_nether and world_the_end. Together they hold the overworld, the Nether and the End. Deleting all three gives you a fully fresh world.
3. Open server.properties in the Files tab.
4. Find the level-seed= line. Leave it blank for a random new world, or type a seed after the equals sign to generate a specific world, for example level-seed=12345.
5. Save server.properties.
6. Click Start. The server generates the new world on startup, which takes a little longer than a normal start.

That is it. When players reconnect using the same IP and port from the panel, they spawn into the new world.

What stays untouched

This process only replaces the world. Your installed plugins, their config files, your server.properties settings, whitelist and ops all stay exactly as they were. You are swapping the map, not resetting the whole server.

Troubleshooting

The old world came back after restart. The folders were probably not fully deleted, or the server was still running when you deleted them. Stop the server, confirm all three folders are gone in the Files tab, then start again.

I set a seed but got a different world. Check for typos and stray spaces in the level-seed= line, and make sure you deleted the old world folders. If the old world files still exist, the server keeps using them and ignores the seed.

Custom world generation from a plugin is not using my seed. Some world-generation plugins manage the seed themselves. Check that plugin's own config in the Files tab.

Still stuck? Jump into our Discord at discord.gg/GuavaHost and the team will help you out.

• world
• seed
• reset
• minecraft
• java

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