A new world on a Minecraft server

A fresh world for a new season, a different seed or a flat map for building: all of it comes down to a few files and settings.

Reset the map without losing the old one

1. Make a backup in Server backups, or download the world folder to your computer.
2. Stop the server.
3. In Files, rename the world folder, for example to world-old. On Paper do the same with world_nether and world_the_end.
4. Start the server. It will not find a world named as in level-name, so it generates a new one.

The old world stays next to the new one, and you can go back by restoring the folder name. Player data such as inventories and positions lives inside the world folder, so after a reset everyone starts from scratch. Operators, the whitelist and bans stay, because they are stored in separate files.

Your own seed and world type

Before the first start of the new world, set these in server.properties (or in Server settings):

level-seed=1234567890
level-type=minecraft\:normal

• level-seed: a seed found online or copied from single player with /seed. Empty means random.
• level-type: minecraft:normal is a regular world, minecraft:flat flat, minecraft:large_biomes with large biomes, minecraft:amplified with very tall mountains.

Both settings only apply when the world is created. Changing the seed of an existing world only affects chunks nobody has visited yet, which leaves visible cliffs at the border.

World border

Without a border players can walk forever, and every new chunk costs the server work and disk space. Set a border with:

/worldborder center 0 0
/worldborder set 10000

The second number is the side length of the square, so with 10 000 players get 5000 blocks from the centre in every direction. That is plenty for a server with friends.