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Complete And Total Terrain Overhaul (CATTO)Minecraft mod for 1.21.1

Overhauls vanilla terrain to make it much larger and more realistic

client and servernewest supported release 1.21.1Worldgen
Latest version
0.1.3
Minecraft
1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge
Licence
MPL-2.0
Downloads
1.0k
Updated
5 d ago
Available on
Modrinth
Space NodeOur hosting

Host Complete And Total Terrain Overhaul (CATTO) servers

One click and Complete And Total Terrain Overhaul (CATTO) is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Fabric
  • 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 Complete And Total Terrain Overhaul (CATTO) declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge21+declared8 Aug 2024

Download

From Complete And Total Terrain Overhaul (CATTO)’s own host. Nothing is re-hosted here.

Most recently published release

0.1.3beta17 Jul 2026

catto-fabric-1.21.1-0.1.3.jar · 0.3 MB · for 1.21.1 · Fabric

Download this release
e37743b39684…
Older versions2
  • 0.1.212 Jul 20261.21.10.3 MB4 downloadsa7f7dee98779…Get
  • 0.1.111 Jul 20261.21.10.3 MB3 downloadsb94f1311e6ee…Get

Frequently asked

Does Complete And Total Terrain Overhaul (CATTO) work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Complete And Total Terrain Overhaul (CATTO) declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install Complete And Total Terrain Overhaul (CATTO) 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 Complete And Total Terrain Overhaul (CATTO) support?

Fabric, 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 Complete And Total Terrain Overhaul (CATTO)?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Complete And Total Terrain Overhaul (CATTO) under?

MPL-2.0, 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 Complete And Total Terrain Overhaul (CATTO)?

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 Complete And Total Terrain Overhaul (CATTO) 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

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

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 23 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .