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plugin

Keep Illegal BlocksMinecraft plugin for 26.2

Prevent illegal blocks from breaking or being updated when a player interacts with an adjacent block

server onlynewest supported 26.2UtilityGame MechanicsDecoration
Latest version
1.4.2-mc1.20.6
Minecraft
1.20.6 to 26.2
Java
Java 25+
Loaders
Purpur, Paper
Licence
GPL-3.0-only
Downloads
109
Updated
6 d ago
Available on
Modrinth
Space NodePartner

Host Keep Illegal Blocks servers

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

  • 26.2
  • Purpur
  • Paper
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • 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 Keep Illegal Blocks declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
26.2Purpur, Paper25+declared16 Jun 2026
26.1.2Purpur, Paper25+declared9 Apr 2026
26.1.1Paper, Purpur25+declared1 Apr 2026
26.1Paper, Purpur25+declared24 Mar 2026
1.21.11Purpur, Paper21+declared9 Dec 2025
1.21.10Purpur, Paper21+declared7 Oct 2025
1.21.9Paper, Purpur21+declared30 Sept 2025
1.21.8Purpur, Paper21+declared17 Jul 2025
1.21.7Purpur, Paper21+declared30 Jun 2025
1.21.6Purpur, Paper21+declared17 Jun 2025
1.21.5Purpur, Paper21+declared25 Mar 2025
1.21.4Paper, Purpur21+declared3 Dec 2024
1.21.3Purpur, Paper21+declared23 Oct 2024
1.21.2Purpur, Paper21+declared22 Oct 2024
1.21.1Purpur, Paper21+declared8 Aug 2024
1.21Purpur, Paper21+declared13 Jun 2024
1.20.6Purpur, Paper21+declared29 Apr 2024

Download

From Keep Illegal Blocks’s own host. Nothing is re-hosted here.

1.4.2-mc1.20.6release26 Jul 2026

KeepIllegalBlocks-1.4.2-mc1.20.6.jar · 0.1 MB · for 1.20.6, 1.21, 1.21.1, 1.21.2

Download latest
93c8f7776c22…
Older versions8
  • 1.4.1-mc1.20.613 Jul 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB6 downloads301df973e9fa…Get
  • 1.4.0-mc1.20.65 Jun 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB19 downloadscdbe7cb42c0e…Get
  • 1.3.0-mc1.20.617 May 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB15 downloads9ef7a414194b…Get
  • 1.2.0-mc1.20.623 Feb 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB16 downloads3057e4454a05…Get
  • 1.1.2-mc1.20.610 Feb 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB10 downloads2dd7ccb483cb…Get
  • 1.1.1-mc1.20.63 Feb 20261.20.6, 1.21, 1.21.1, 1.21.2, 1.21.30.1 MB12 downloadsf5d9124225c0…Get
  • 1.1.0-mc1.20.62 Feb 20261.20.60.1 MB11 downloadseb5be593c25c…Get
  • 1.0.0-mc1.20.619 Jan 20261.20.60.0 MB13 downloadsb5a106d0a5e6…Get

Frequently asked

Does Keep Illegal Blocks work on Minecraft 26.2?

Yes. 26.2 is the newest Minecraft version Keep Illegal 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 Keep Illegal Blocks support?

Everything the author has declared, from 1.20.6 up to 26.2. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Keep Illegal Blocks on the client or the server?

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

Which server software does Keep Illegal Blocks need?

Purpur, Paper. A build for one server platform will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Keep Illegal Blocks?

Java 25 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the plugin itself.

What licence is Keep Illegal Blocks under?

GPL-3.0-only, 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 Keep Illegal Blocks?

Download the file from the author's own release, drop it into your server's plugins folder, and restart the server. It generates its configuration on first start. Check the Minecraft version matches the one your server runs.

Where do I download Keep Illegal Blocks safely?

From the author's own page on Modrinth, 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.

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Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

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