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Just Enough Building BlocksMinecraft mod for 1.21.10

Adds a variety of different building blocks. Vertical slabs, and more.

client and servernewest supported release 1.21.10UtilityDecorationOptimization
Latest version
0.8.2+mc1.21.6-1.21.10
Minecraft
1.20.1 to 1.21.10
Java
Java 21+
Loader
Fabric
Licence
MIT
Downloads
916
Updated
6 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Just Enough Building Blocks servers

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

  • 1.21.10
  • 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 Just Enough Building Blocks declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.7Fabric21+declared30 Jun 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.1Fabric21+declared8 Aug 2024
1.20.6Fabric21+declared29 Apr 2024
1.20.5Fabric21+declared23 Apr 2024
1.20.4Fabric17+declared7 Dec 2023
1.20.3Fabric17+declared4 Dec 2023
1.20.2Fabric17+declared20 Sept 2023
1.20.1Fabric17+declared12 Jun 2023

Download

From Just Enough Building Blocks’s own host. Nothing is re-hosted here.

Most recently published release

0.8.2+mc1.21.6-1.21.10alpha6 May 2026

just-enought-building-blocks-0.8.2+mc1.21.6-1.21.10.jar · 7.7 MB · for 1.21.10, 1.21.9, 1.21.8, 1.21.7, 1.21.6 · Fabric

Download this release
2ded99b28445…
Older versions12
  • 0.8.26 May 20261.21.17.7 MB273 downloadsee10d575df38…Get
  • 0.8.16 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more7.4 MB484 downloads2e7b31612281…Get
  • 0.85 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more7.4 MB14 downloadscb0a25f5b75f…Get
  • 0.74 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more5.3 MB8 downloads0c974cff745c…Get
  • 0.63 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more4.8 MB16 downloadsb7dac32f512e…Get
  • 0.5.23 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more4.5 MB9 downloads8905d2fb106f…Get
  • 0.5.13 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more4.5 MB11 downloads847bf650ad57…Get
  • 0.53 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more5.2 MB7 downloadsbf4112be98d9…Get
  • 0.43 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more5.1 MB4 downloads7285f48b008c…Get
  • 0.33 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more5.1 MB7 downloads1f2524ec34db…Get
  • 0.23 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more3.1 MB5 downloads0603264becf2…Get
  • 0.12 May 20261.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +1 more2.3 MB11 downloadsf29781cdaadc…Get

Frequently asked

Does Just Enough Building Blocks work on Minecraft 1.21.10?

Yes. 1.21.10 is the newest Minecraft version Just Enough Building 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 Just Enough Building Blocks support?

Everything the author has declared, from 1.20.1 up to 1.21.10. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Just Enough Building Blocks 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 Just Enough Building 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 Just Enough Building 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 Just Enough Building 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 Just Enough Building 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 Just Enough Building 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.

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.Xaero's MinimapDisplays the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.

Details from Modrinth, where the author last updated it on 6 May 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? .