Mutator
Attribute randomizer based on logical scalingGameRules
| GameRule | Type | Default | Explanation |
|---|---|---|---|
| attribute_inheritance | Boolean | True | On animal breeding, the baby has a chance to inherit attributes from parents or mutate |
| attribute_infection | Boolean | True | On zombie infection, the infected has chance to inherit random attribute from zombie |
| attribute_preservation | Boolean | True | Preserves attributes on conversion |
| skeletons_use_axe | Boolean | True | Makes skeletons with scale > 1.2 have axe instead of a bow |
| explosion_scaling | Boolean | True | Scales ExplosionRadius of mobs |
| burn_scaling | Boolean | True | Scales burn damage |
| tame_scaling | Boolean | True | Makes animals harder to tame |
| range_scaling | Boolean | True | Scales mob attack/pickup range |
| exp_scaling | Boolean | True | Scales experience |
| mutation | Boolean | True | If mobs should have mutation |
| scaling_steps | Integer | 4 | How much steps, maximum, per mutated mob spawn, should be taken in order to find a free space. Higher values is accurate, but will impact main thread performance. |
| chance | Integer | 25 | Mob mutation chance |
| weirdness | Double | 6.0 | General weirdness that is used for random |
| attribute_positive_multiplier | Double | 1.2 | General scaling for positive attributes |
| attribute_negative_multiplier | Double | 0.5 | General scaling for negative attributes |
External configurations
ignore.json
| Field | Type | Explanation |
|---|---|---|
| reasons | List | SpawnReason values that mutation ignores |
| attributes | List | Attribute identifiers that mutation ignores |
| types | List | EntityType identifiers that ignore mutation |
| conversion | List | EntityType identifiers that ignore attribute_preservation |
scaling.json
| Field | Type | Explanation |
|---|---|---|
| positive | List | Attributes that increase with bigger mob scale |
| negative | List | Attributes that decrease with bigger mob scale |
| lootScaling | Boolean | Enables/disables loot scaling; needs restart to take effect |
most config changes can be applied at runtime with /mutator::reload
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as mutator-fabricmc-3.0.jar — drop this file into the mods folder
- Download size: 208 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.