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BlockUIMinecraft mod for 1.21.1

Easy to Use UI library for Forge mods

newest supported 1.21.1Library Api
Latest version
blockui-1.0.211-1.21.1-snapshot.jar
Minecraft
1.17.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
not stated
Downloads
52.2M
Updated
6 mo ago
Available on
CurseForge
Space NodePartner

Host BlockUI servers

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

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

Minecraft versions

Every version BlockUI declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.4Forge, NeoForge17+declared7 Dec 2023
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.20NeoForge, Forge17+declared2 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.3NeoForge, Forge17+declared7 Dec 2022
1.19.2Forge, NeoForge17+declared5 Aug 2022
1.19.1Forge, NeoForge17+declared27 Jul 2022
1.19Forge, NeoForge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.18.1NeoForge, Forge17+declared10 Dec 2021
1.18NeoForge, Forge17+declared30 Nov 2021
1.17.1NeoForge, Forge16+declared6 Jul 2021

Download

From BlockUI’s own host. Nothing is re-hosted here.

All 37 releases
blockui-1.0.211-1.21.1-snapshot.jarbeta21 Mar 2026

blockui-1.0.211-1.21.1-snapshot.jar · 0.4 MB · for 1.21.1

Download latest
0ab4e0342b9f…
Older versions24
  • blockui-1.20.1-1.0.194-snapshot.jar10 Feb 20261.20.10.4 MB7081dc1fa98a…Get
  • blockui-1.0.210-1.21.1-snapshot.jar10 Feb 20261.21.10.4 MB08e3479772b1…Get
  • blockui-1.20.1-1.0.193.jar28 Jan 20261.20.10.4 MB290.6k downloadsed432bb0f706…Get
  • blockui-1.0.209-1.21.1.jar28 Jan 20261.21.10.4 MB01cba16a7d71…Get
  • blockui-1.20.1-1.0.193-snapshot.jar28 Jan 20261.20.10.4 MB74c8a0944177…Get
  • blockui-1.0.209-1.21.1-snapshot.jar28 Jan 20261.21.10.4 MB2b142fb2ed3d…Get
  • blockui-1.0.208-1.21.1-snapshot.jar28 Dec 20251.21.10.4 MB7a47aebb5aab…Get
  • blockui-1.20.1-1.0.192-snapshot.jar28 Dec 20251.20.10.4 MB88450411efd8…Get
  • blockui-1.0.206-1.21.1-snapshot.jar28 Sept 20251.21.10.4 MB33 downloads986af1e74d12…Get
  • blockui-1.20.1-1.0.194.jar28 Sept 20251.20.10.4 MB1.1M downloads9a50469803b8…Get
  • blockui-1.0.205-1.21.1-snapshot.jar22 Sept 20251.21.10.4 MBc8ff9e932df1…Get
  • blockui-1.0.204-1.21.1-snapshot.jar9 Aug 20251.21.10.4 MB10 downloads800776c7fb7d…Get
  • blockui-1.0.203-1.21.1-snapshot.jar9 Aug 20251.21.10.4 MB3 downloads2b3dfce28ea6…Get
  • blockui-1.0.205-1.21.1.jar13 Jun 20251.21.10.4 MB854.6k downloads3f50eb92b60d…Get
  • blockui-1.0.202-1.21.1-snapshot.jar13 Jun 20251.21.10.4 MB45bfc7380966…Get
  • blockui-1.0.203-1.21.1alpha.jar12 Jun 20251.21.10.4 MB1.8k downloads8b5b975dbfc9…Get
  • blockui-1.0.201-1.21.1-snapshot.jar12 Jun 20251.21.10.4 MB5811b6525b2c…Get
  • blockui-1.20.1-1.0.191-alpha.jar12 Jun 20251.20.10.4 MB116 downloadse3a044b487e9…Get
  • blockui-1.0.200-1.21.1-snapshot.jar21 May 20251.21.10.4 MB9bc5b03e6a54…Get
  • blockui-1.20.1-1.0.190-snapshot.jar30 Mar 20251.20.10.4 MB392.6k downloads021049afd7db…Get
  • blockui-1.0.199-1.21.1-snapshot.jar30 Mar 20251.21.10.4 MB855.5k downloads03281e5792c9…Get
  • blockui-1.0.198-1.21.1-snapshot.jar30 Mar 20251.21.10.4 MB1.0k downloads9428363de050…Get
  • blockui-1.0.197-1.21.1-snapshot.jar30 Mar 20251.21.10.4 MB561 downloads4619b1d29b35…Get
  • blockui-1.0.196-1.21.1-snapshot.jar23 Mar 20251.21.10.4 MB25.2k downloads161c2569753a…Get

Frequently asked

Does BlockUI work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version BlockUI 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 BlockUI support?

Everything the author has declared, from 1.17.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which loader does BlockUI need?

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

Which Java version do I need for BlockUI?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

How do I install BlockUI?

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 BlockUI safely?

From the author's own page on CurseForge, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Last checked 1 mo ago against CurseForge. 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? .