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Genesis - World Previewer & PregeneratorMinecraft mod for 1.21.1

Preview any seed before you create the world. Pre-generate chunks before you enter it.

client and servernewest supported 1.21.1UtilityGame MechanicsWorldgenOptimization
Latest version
1.1.0-1.21.1
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Fabric, Forge, NeoForge
Licence
LicenseRef-Alkearl-License-Agreement
Downloads
17.9k
Updated
22 d ago
Available on
Modrinth
Space NodeOur hosting

Host Genesis - World Previewer & Pregenerator servers

One click and Genesis - World Previewer & Pregenerator is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Fabric
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Genesis - World Previewer & Pregenerator declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, Forge, NeoForge21+declared8 Aug 2024
1.20.1Fabric, Forge, NeoForge17+declared12 Jun 2023

Download

From Genesis - World Previewer & Pregenerator’s own host. Nothing is re-hosted here.

1.1.0-1.21.1release25 Jun 2026

genesis-1.1.0-1.21.1-FABRIC.jar · 89 KB · for 1.21.1

Download latest
d55322a6bc3c…
Older versions3
  • 1.1.0-1.20.125 Jun 20261.20.185 KB295 downloads375cb9bfbd05…Get
  • 1.0.0-1.21.125 May 20261.21.183 KB630 downloads91f8b16cde52…Get
  • 1.0.0-1.20.125 May 20261.20.181 KB88 downloadsf568d9137c73…Get

Frequently asked

Does Genesis - World Previewer & Pregenerator work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Genesis - World Previewer & Pregenerator declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Genesis - World Previewer & Pregenerator support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Genesis - World Previewer & Pregenerator on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Genesis - World Previewer & Pregenerator support?

Fabric, Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Genesis - World Previewer & Pregenerator?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Genesis - World Previewer & Pregenerator under?

LicenseRef-Alkearl-License-Agreement, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Genesis - World Previewer & Pregenerator?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Genesis - World Previewer & Pregenerator safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from Modrinth, where the author last updated it on 6 Sept 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .