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Minecraft: Custom World Seed

Discover how to create unique Minecraft worlds by setting your own seeds for new adventures and world generation → Learn more now

10 November 20261 min read0 Views0 helpful

Introduction

A seed in Minecraft is a special code made up of numbers or letters that determines how your game world is generated. It shapes the terrain, biomes, structures, and resources you find in your world. Using the same seed, game version, and settings will always generate the same world – perfect for sharing unique worlds with others.

Note that you cannot change the seed of an existing world. The seed only affects the generation of a new world. To use a different seed, you must create a new world after setting it.

FAQ

Frequently asked questions

First, stop your server, open the server.properties file in the Configuration tab (raw text view), and enter your desired seed in the line starting with level-seed=.
No, the seed only affects the generation of a new world. To use a different seed, you must create a new world after setting it.
The easiest way is to change the level-name in the Configuration tab to a new, unused name (e.g., world1) so Minecraft creates a fresh world folder with the new seed.

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