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Improved MobsMinecraft mod for 1.21.1

Harder mobs for increased difficulty

server onlynewest supported 1.21.1Mobs
Latest version
1.20.1-1.13.7-forge
Loaders
NeoForge, Forge, Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
584.3k
Updated
25 d ago
Available on
Modrinth
Space NodeOur hosting

Host Improved Mobs servers

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

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

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge, Fabric21+declared8 Aug 2024
1.20.6Fabric, NeoForge, Forge21+declared29 Apr 2024
1.20.1Forge, Fabric, NeoForge17+declared12 Jun 2023
1.19.4NeoForge, Forge, Fabric17+declared14 Mar 2023
1.18.2Fabric, NeoForge, Forge17+declared28 Feb 2022

Download

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

All 29 releases
1.20.1-1.13.7-forgerelease19 Jun 2026

improvedmobs-1.20.1-1.13.7-forge.jar · 0.3 MB · for 1.20.1

Download latest
942642182e41
Older versions24
  • 1.20.1-1.13.7-fabric19 Jun 20261.20.10.3 MBba015199c148Get
  • 1.21.1-1.15.2-fabric19 Nov 20251.21.10.4 MBd1ab548bb314Get
  • 1.21.1-1.15.2-neoforge19 Nov 20251.21.10.4 MBf8c651b71074Get
  • 1.21.1-1.15.1-neoforge27 Oct 20251.21.10.4 MBeda831be2740Get
  • 1.21.1-1.15.1-fabric27 Oct 20251.21.10.4 MB65df014a759aGet
  • 1.21.1-1.15.0-fabric26 Oct 20251.21.10.4 MBc850e9ef5096Get
  • 1.21.1-1.15.0-neoforge26 Oct 20251.21.10.4 MBa94f6cda4442Get
  • 1.21.1-1.14.2-neoforge23 Jul 20251.21.10.3 MB21125668a05bGet
  • 1.21.1-1.14.2-fabric23 Jul 20251.21.10.3 MBf52937e2a06bGet
  • 1.21.1-1.14.1-neoforge23 Jul 20251.21.10.3 MBce3214a623b9Get
  • 1.21.1-1.14.1-fabric23 Jul 20251.21.10.3 MB8169f9c63a24Get
  • 1.21.1-1.14.0-neoforge23 Jul 20251.21.10.3 MB4429af41f5f8Get
  • 1.21.1-1.14.0-fabric23 Jul 20251.21.10.3 MBf75c052ed88bGet
  • 1.20.1-1.13.6-forge19 Jul 20251.20.10.3 MB7b46804330aeGet
  • 1.20.1-1.13.6-fabric19 Jul 20251.20.10.3 MBf37982e20495Get
  • 1.21.1-1.13.5-neoforge9 May 20251.21.10.3 MB269ef307d95cGet
  • 1.21.1-1.13.5-fabric9 May 20251.21.10.3 MBab3f49462c32Get
  • 1.20.1-1.13.5-forge9 May 20251.20.10.3 MB02fb0a59e993Get
  • 1.20.1-1.13.5-fabric9 May 20251.20.10.3 MB6a4b0bc50099Get
  • 1.18.2-1.13.5-forge9 May 20251.18.20.3 MBce9b37e795fcGet
  • 1.18.2-1.13.5-fabric9 May 20251.18.20.3 MBb1a58355ed2bGet
  • 1.21.1-1.13.4-neoforge6 May 20251.21.10.3 MB65b076d41e1dGet
  • 1.21.1-1.13.4-fabric6 May 20251.21.10.3 MBc3ba4877776aGet
  • 1.20.1-1.13.4-forge6 May 20251.20.10.3 MB870949c3f4b7Get

Frequently asked

Does Improved Mobs work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Improved Mobs 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 Improved Mobs support?

Everything the author has declared, from 1.18.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Improved Mobs on the client or the server?

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

Which platform or loader does Improved Mobs support?

NeoForge, Forge, 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 Improved Mobs?

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 Improved Mobs under?

LicenseRef-All-Rights-Reserved, 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 Improved Mobs?

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 Improved Mobs 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.

Last checked 23 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.

Is this information wrong or missing something? .