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DefenseMinecraft mod for 1.21.11

A mod designed to protect players from unwanted PvP interactions while still allowing PvP on servers! Originally designed for the Empty World SMP

client and servernewest supported 1.21.11UtilityGame MechanicsSocial
Latest version
1.21.11-0.5.0
Minecraft
1.21 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
MIT
Downloads
6.3k
Updated
9 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Defense servers

One click and Defense 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 Defense declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.1Fabric21+declared8 Aug 2024
1.21Fabric21+declared13 Jun 2024

Download

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

1.21.11-0.5.0release10 Jan 2026

defense-1.21.11-0.5.0.jar · 0.7 MB · for 1.21.11

Download latest
98d721732657…
Older versions11
  • 1.21.6-0.4.322 Jun 20251.21.60.7 MB479 downloads74364ef00687…Get
  • 1.21.5-0.4.323 May 20251.21.50.7 MB244 downloads539c4556bb11…Get
  • 1.21.4-0.4.28 Mar 20251.21.40.7 MB472 downloads262a2614212a…Get
  • 1.21-0.4.28 Mar 20251.21.1, 1.210.7 MB1.8k downloadsde6189e3898d…Get
  • 1.21-0.4.130 Aug 20241.21.1, 1.210.7 MB2.2k downloads09060ee12994…Get
  • 1.21-0.4.029 Aug 20241.21.1, 1.210.7 MB111 downloads9c72f87effcf…Get
  • 1.21-0.3.025 Aug 20241.21.1, 1.2199 KB108 downloads88690edeae22…Get
  • 1.21-0.3.0-BETA122 Aug 20241.21.1, 1.2199 KB75 downloads052dcea32655…Get
  • 1.21-0.2.014 Aug 20241.21.1, 1.2190 KB120 downloads50056f771c35…Get
  • 1.21-0.1.65 Aug 20241.2175 KB104 downloads5099b38b7345…Get
  • 1.21-0.1.53 Aug 20241.2175 KB147 downloadsac4b2acf6a22…Get

Frequently asked

Does Defense work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Defense 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 Defense support?

Everything the author has declared, from 1.21 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 Defense 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 Defense 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 Defense?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Defense 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 Defense?

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 Defense 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. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

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

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Details from Modrinth, where the author last updated it on 10 Jan 2026. 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? .