
Modrinth · Minecraft mod
Rare OP Mobs
Rare overpowered mob spawns with random enchants and potion effects that are beyond vanilla limits.
Quick answer
Which Rare OP Mobs release should I use?
Rare OP Mobs 1.3 targets 26.2 with NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Rare OP Mobs required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Rare OP Mobs 1.3 need?
1.3. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Rare OP Mobs without breaking your instance.
Built for Rare OP Mobs 1.3. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.3. It targets 26.2 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.3. It opens that exact file at the source.
About this project
What does Rare OP Mobs add?
Rare overpowered mob spawns with random enchants and potion effects that are beyond vanilla limits, at an increasingly lower chance the higher the amplitude of effect or level of enchantment.
You can also blacklist certain enchantments and list thier max level or amplitude when on a rare mob spawn, or enable incompatible enchantments (good for increasing difficulty since you can't tell if its OP or not until you fight it).
They also have a configurable chance to spawn with additional equipment. You add or change available equipment in the config.
Project description from Modrinth.
Pick your setup
Rare OP Mobs by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
1 loader build1.21.10
1 loader build1.21.1
1 loader build1.20.6
1 loader build1.20.5
1 loader build1.20.4
1 loader build1.20.3
1 loader build1.20.2
1 loader build1.20.1
1 loader build1.20
1 loader build1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Rare OP Mobs versions and loaders
1.3
rareopmobs-26.2-1.3.jar
6 Sept 2026
1.3
rareopmobs-1.21.11-1.3.jar
18 May 2026
1.3
rareopmobs-1.21.10-1.3.jar
18 May 2026
1.3
rareopmobs-1.21.1-1.3.jar
18 May 2026
1.3
rareopmobs-1.20.1-1.3.jar
18 May 2026
1.3
rareopmobs-1.12.2-1.3.jar
18 May 2026
1.2
rareopmobs-1.12.2-1.2.jar
1 Apr 2026
1.2
rareopmobs-1.20.1-1.2.jar
1 Apr 2026
1.1
rareopmobs-1.1.jar
13 Dec 2025
1.0
rareopmobs-1.0.jar
31 Oct 2025
Looking for an older file? The official Modrinth project page is in Resources.