Menu

mod

One Chunk BlocksMinecraft mod for 1.21.11

Turns generated chunks into single-block chunk mosaics while keeping Minecraft fully beatable.

server onlynewest supported release 1.21.11AdventureWorldgenCursed
Latest version
1.0.9+1.21.4
Minecraft
1.16.5 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
MIT
Downloads
1.4k
Updated
6 mo ago
Available on
Modrinth
Space NodeOur hosting

Host One Chunk Blocks servers

One click and One Chunk Blocks is installed with the right loader, on hardware built for it.

  • 1.21.11
  • Fabric
  • 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 One Chunk Blocks declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.1Fabric21+declared8 Aug 2024
1.20.6Fabric21+declared29 Apr 2024
1.20.4Fabric17+declared7 Dec 2023
1.20.1Fabric17+declared12 Jun 2023
1.19.2Fabric17+declared5 Aug 2022
1.18.2Fabric17+declared28 Feb 2022
1.17.1Fabric16+declared6 Jul 2021
1.16.5Fabric8+declared14 Jan 2021

Download

From One Chunk Blocks’s own host. Nothing is re-hosted here.

For Minecraft 1.21.11

Choose the loader you use before downloading.

  • Fabric

    1.0.9 · 6 Apr 2026 · onechunkblocks-1.0.9.jar

    Get Fabric

Most recently published release

1.0.9+1.21.4release19 Apr 2026

onechunkblocks-fabric-1.21.4.jar · 10 KB · for 1.21.4 · Fabric

Download this release
cd05fef6859a…
Older versions17
  • 1.0.9+1.21.119 Apr 20261.21.110 KB130 downloadsfd9246f1ed9e…Get
  • 1.0.9+1.20.619 Apr 20261.20.610 KB27 downloadsc48dc1094a40…Get
  • 1.0.9+1.20.419 Apr 20261.20.410 KB27 downloads596c0218d1af…Get
  • 1.0.9+1.20.119 Apr 20261.20.110 KB159 downloads7170ec44405f…Get
  • 1.0.9+1.19.219 Apr 20261.19.29 KB35 downloads8a694d1cedf4…Get
  • 1.0.9+1.18.219 Apr 20261.18.29 KB18 downloads36e0e7ebd924…Get
  • 1.0.9+1.17.119 Apr 20261.17.18 KB21 downloadsb74ce3552dfb…Get
  • 1.0.9+1.16.519 Apr 20261.16.58 KB61 downloads4dd5fbd78a55…Get
  • 1.0.96 Apr 20261.21.1110 KB690 downloads06312fdc7759…Get
  • 1.0.86 Apr 20261.21.1110 KB24 downloads0eaf84347334…Get
  • 1.0.75 Apr 20261.21.1111 KB18 downloads2763fc7cd7e3…Get
  • 1.0.65 Apr 20261.21.1110 KB8 downloadsfd9d21cfc549…Get
  • 1.0.55 Apr 20261.21.1110 KB8 downloadsc2b107521030…Get
  • 1.0.45 Apr 20261.21.119 KB8 downloads8afb61d093de…Get
  • 1.0.35 Apr 20261.21.118 KB7 downloads4a632dd66dda…Get
  • 1.0.25 Apr 20261.21.117 KB10 downloads929c085df4ff…Get
  • 1.0.05 Apr 20261.21.117 KB8 downloadsd0a43b5004ff…Get

Frequently asked

Does One Chunk Blocks work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version One Chunk Blocks 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 One Chunk Blocks support?

Everything the author has declared, from 1.16.5 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install One Chunk Blocks on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does One Chunk Blocks support?

Fabric. 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 One Chunk Blocks?

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 One Chunk Blocks under?

MIT, 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 One Chunk Blocks?

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 One Chunk Blocks 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.

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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.

Details from Modrinth, where the author last updated it on 19 Apr 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? .