CurseForge · Minecraft mod
Mobs Properties Randomness
Randomize mobs properties. Add Potion Effects, apply Attribute Modifiers, add Equipment and more!
Quick answer
Which Mobs Properties Randomness release should I use?
Mobs Properties Randomness 6.1.6.1 targets 1.21.1 with NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. All 1 required mods have matching files.
Where it goes
Is Mobs Properties Randomness required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does Mobs Properties Randomness 6.1.6.1 need?
6.1.6.1. Change the file and its required mods may change too.
Install InsaneLib first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Mobs Properties Randomness without breaking your instance.
Built for Mobs Properties Randomness 6.1.6.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 6.1.6.1. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install InsaneLib first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 6.1.6.1. It opens that exact file at the source.
About this project
What does Mobs Properties Randomness add?
Summary
Mobs Properties Randomness lets you add/change many properties to mobs on spawn, and, with events, when other stuff happens, such as on attack, on tick or on death with data packs.
This mod requires InsaneLib
As of 5.0.0 and up the mod (and its dependencies) now work server side only, so with MPR server you can connect with a vanilla client.
The mod
The mod does nothing on its own, you have to make a data pack: click here to get started (please note this is for latest version, click here for a list of versions)
You can also find a video tutorial playlist below.
Some stuff you can do:
- Potion Effects
- Attribute Modifiers
- Equipment
- Effect immunity
- NBT
- Events (attack, kill, target change)
- Presets (for creating stuff like bosses)
Links
Getting Started

Check the sidebar for Discord and other links -->
Credits
Thanks for part of the logo to Smabblis
Project description from CurseForge.
Pick your setup
Mobs Properties Randomness by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Mobs Properties Randomness versions and loaders
6.1.6.1
mobspropertiesrandomness-6.1.6.1.jar
1 Aug 2026
6.1.6.0
mobspropertiesrandomness-6.1.6.0.jar
31 Jul 2026
6.1.5.2
mobspropertiesrandomness-6.1.5.2.jar
31 Jul 2026
6.1.5.1
mobspropertiesrandomness-6.1.5.1.jar
31 Jul 2026
6.1.5.0
mobspropertiesrandomness-6.1.5.0.jar
30 Jul 2026
6.1.4.1
mobspropertiesrandomness-6.1.4.1.jar
29 Jul 2026
6.1.3.2
mobspropertiesrandomness-6.1.3.2.jar
18 Jul 2026
6.1.3.1
mobspropertiesrandomness-6.1.3.1.jar
15 Jul 2026
6.1.2.0
mobspropertiesrandomness-6.1.2.0.jar
10 Jul 2026
6.1.2.0
mobspropertiesrandomness-6.1.2.0.jar
10 Jul 2026
6.1.1.0-beta
mobspropertiesrandomness-6.1.1.0-beta.jar
18 Jun 2026
6.1.0.0-alpha
mobspropertiesrandomness-6.1.0.0-alpha.jar
15 Jun 2026
Looking for an older file? The official CurseForge project page is in Resources.