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Mobs Properties RandomnessMinecraft mod for 1.21.1

Randomize mobs properties. Add Potion Effects, Equipment, on hit effects and more!

server onlynewest supported release 1.21.1AdventureMobsGame Mechanics
Latest version
6.2.1.0
Minecraft
1.18.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LicenseRef-All-Rights-Reserved
Downloads
57.4k
Updated
11 d ago
Available on
Modrinth
Space NodeOur hosting

Host Mobs Properties Randomness servers

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

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

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.18.2Forge, NeoForge17+declared28 Feb 2022

Download

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

Browse 65 indexed releases

Most recently published release

6.2.1.0release29 Oct 2026

mobspropertiesrandomness-6.2.1.0.jar · 0.4 MB · for 1.21.1 · NeoForge

Download this release
00832c9d0842…
Older versions24
  • 6.1.10.013 Sept 20261.21.10.4 MB9b8298bcc28d…Get
  • 6.1.9.05 Sept 20261.21.10.4 MBe367d1b943f7…Get
  • 6.1.8.05 Sept 20261.21.10.4 MB25a46fc7c0f7…Get
  • 6.1.7.24 Sept 20261.21.10.4 MB364059e20675…Get
  • 6.1.7.123 Aug 20261.21.10.4 MBf33884752c7a…Get
  • 6.1.7.022 Aug 20261.21.10.4 MBc235a6dfda15…Get
  • 6.1.6.11 Aug 20261.21.10.4 MB214787479ae8…Get
  • 6.1.6.031 Jul 20261.21.10.4 MB9 downloadsb0073cbd5317…Get
  • 6.1.5.231 Jul 20261.21.10.4 MB4 downloads02b5ab93385d…Get
  • 6.1.5.131 Jul 20261.21.10.4 MB1 downloaddfcdde32ccb4…Get
  • 6.1.5.030 Jul 20261.21.10.4 MB19 downloads7134e8b10a45…Get
  • 6.1.4.129 Jul 20261.21.10.4 MB12 downloads3db6e71cbeb2…Get
  • 6.1.3.218 Jul 20261.21.10.4 MB95 downloads162f28ff478e…Get
  • 6.1.3.115 Jul 20261.21.10.4 MB40 downloadse2cf65b4d479…Get
  • 6.1.2.010 Jul 20261.21.10.4 MB3 downloads0215c798ef16…Get
  • 6.1.1.0-beta18 Jun 20261.21.10.4 MB90 downloads3a3cbd89886c…Get
  • 6.1.0.0-alpha15 Jun 20261.21.10.4 MB74 downloads4be26433d094…Get
  • 5.1.7.325 May 20261.20.10.4 MB1.0k downloads7caeccfb92c0…Get
  • 6.0.1.325 May 20261.21.10.4 MB191 downloads83a367edf58b…Get
  • 5.1.7.26 Mar 20261.20.10.4 MB4.5k downloads420450d9ff9e…Get
  • 6.0.1.2-beta22 Feb 20261.21.10.4 MB322 downloads0bc9e9e77fdd…Get
  • 6.0.1.1-beta21 Feb 20261.21.10.4 MB18 downloads42dd1fac6c2f…Get
  • 6.0.1.0-beta21 Feb 20261.21.10.4 MB15 downloads9fc0a8b7b9d0…Get
  • 6.0.0.0-alpha19 Feb 20261.21.10.3 MB20 downloads95d7839ec395…Get

Dependencies

What Mobs Properties Randomnessdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

InsaneLibRequired. A set of common classes and utilities used by Insane's mods

Frequently asked

Does Mobs Properties Randomness work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Mobs Properties Randomness 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 Mobs Properties Randomness 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 Mobs Properties Randomness on the client or the server?

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

Which platform or loader does Mobs Properties Randomness support?

NeoForge, Forge. 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 Mobs Properties Randomness?

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 does Mobs Properties Randomness need to run?

It declares InsaneLib as required, so that has to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Mobs Properties Randomness 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 Mobs Properties Randomness?

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 Mobs Properties Randomness 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.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!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.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 29 Oct 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? .