Mob Overrides

Mob Overrides

Mob overrides allow you to customize leveling behavior for specific mob types within structure or biome rules. This gives you fine-grained control over individual mobs.

Location

Mob overrides are nested inside structure or biome rule files:

{
  "structure": "minecraft:stronghold",
  "mob_overrides": {
    "minecraft:zombie": {
      // Override settings for zombies
    },
    "minecraft:skeleton": {
      // Override settings for skeletons
    }
  }
}

Field Reference

Field	Type	Default	Description
fixed_level	Integer	null	Exact level for this mob type
level_bonus	Integer	null	Add to calculated level
min_level	Integer	null	Minimum level for this mob
max_level	Integer	null	Maximum level for this mob
level_range	Object	null	Alternative way to set min/max
ignore_level_cap	Boolean	false	Bypass global level cap
can_attack	Boolean	null	Enable combat for passive mobs
attribute_multipliers	Object	{}	Multiply attribute bonuses
attribute_scaling	Object	{}	Custom attribute scaling

Basic Usage

Fixed Level Override

Give zombies in strongholds a fixed level of 200:

{
  "structure": "minecraft:stronghold",
  "mob_overrides": {
    "minecraft:zombie": {
      "fixed_level": 200
    }
  }
}

Level Bonus

Add 50 levels to whatever the rule calculates:

{
  "structure": "minecraft:stronghold",
  "level_mode": "random",
  "level_range": {
    "min": 50,
    "max": 100
  },
  "mob_overrides": {
    "minecraft:skeleton": {
      "level_bonus": 50
    }
  }
}

A skeleton that would be level 75 becomes level 125.

Custom Level Range

Restrict specific mobs to a different level range:

{
  "biome": "minecraft:desert",
  "level_range": {
    "min": 10,
    "max": 50
  },
  "mob_overrides": {
    "minecraft:husk": {
      "level_range": {
        "min": 80,
        "max": 120
      }
    }
  }
}

Or use individual fields:

{
  "mob_overrides": {
    "minecraft:husk": {
      "min_level": 80,
      "max_level": 120
    }
  }
}

Bypassing Level Cap

By default, all levels are capped by globalLevelCap in the config. Override this per-mob:

{
  "mob_overrides": {
    "minecraft:warden": {
      "fixed_level": 9999,
      "ignore_level_cap": true
    }
  }
}

Passive Mob Combat

Enable passive mobs to fight back when attacked:

{
  "structure": "minecraft:stronghold",
  "mob_overrides": {
    "minecraft:chicken": {
      "fixed_level": 500,
      "can_attack": true
    }
  }
}

Combat Behavior

When can_attack is enabled:

1. The passive mob gains melee attack AI
2. When attacked, it will target the attacker
3. Attack damage scales with level
4. The mob remembers who hurt it

Combat Values

Value	Behavior
true	Mob can attack when provoked
false	Mob cannot attack (even if config enables it)
null (default)	Use global config setting

Global config setting: leveledPassivesCanAttack

Attribute Overrides

Attribute Multipliers

Multiply the base attribute bonuses for specific mobs:

{
  "mob_overrides": {
    "minecraft:zombie": {
      "attribute_multipliers": {
        "minecraft:generic.max_health": 2.0,
        "minecraft:generic.attack_damage": 1.5
      }
    }
  }
}

This multiplies the bonuses from the parent rule's attribute_scaling.

Custom Attribute Scaling

Completely override attribute scaling for specific mobs:

{
  "mob_overrides": {
    "minecraft:skeleton": {
      "attribute_scaling": {
        "minecraft:generic.max_health": {
          "base_bonus": 100.0,
          "per_level": 2.0,
          "operation": "addition",
          "max_bonus": 1000.0
        },
        "minecraft:generic.attack_damage": {
          "base_bonus": 5.0,
          "per_level": 0.1,
          "operation": "addition"
        }
      }
    }
  }
}

Complete Examples

Dungeon Elite Zombies

{
  "structure": "minecraft:stronghold",
  "priority": 100,
  "level_mode": "random",
  "level_range": {
    "min": 50,
    "max": 100
  },
  "mob_overrides": {
    "minecraft:zombie": {
      "fixed_level": 200,
      "ignore_level_cap": true,
      "attribute_scaling": {
        "minecraft:generic.max_health": {
          "base_bonus": 200.0,
          "per_level": 1.0,
          "operation": "addition"
        },
        "minecraft:generic.attack_damage": {
          "base_bonus": 10.0,
          "per_level": 0.2,
          "operation": "addition"
        },
        "minecraft:generic.armor": {
          "base_bonus": 10.0,
          "per_level": 0.1,
          "operation": "addition"
        }
      }
    }
  }
}

Aggressive Farm Animals

{
  "structure": "minecraft:village_plains",
  "priority": 80,
  "mob_overrides": {
    "minecraft:chicken": {
      "fixed_level": 50,
      "can_attack": true,
      "attribute_scaling": {
        "minecraft:generic.attack_damage": {
          "base_bonus": 2.0,
          "per_level": 0.1,
          "operation": "addition"
        }
      }
    },
    "minecraft:cow": {
      "fixed_level": 75,
      "can_attack": true,
      "attribute_scaling": {
        "minecraft:generic.attack_damage": {
          "base_bonus": 4.0,
          "per_level": 0.2,
          "operation": "addition"
        }
      }
    },
    "minecraft:pig": {
      "fixed_level": 60,
      "can_attack": true
    }
  }
}

Tiered Nether Difficulty

{
  "biome_tags": ["minecraft:is_nether"],
  "priority": 60,
  "level_mode": "distance",
  "level_range": {
    "min": 30,
    "max": 100
  },
  "mob_overrides": {
    "minecraft:blaze": {
      "level_bonus": 20,
      "attribute_multipliers": {
        "minecraft:generic.max_health": 1.5
      }
    },
    "minecraft:wither_skeleton": {
      "level_bonus": 30,
      "attribute_multipliers": {
        "minecraft:generic.max_health": 2.0,
        "minecraft:generic.attack_damage": 1.5
      }
    },
    "minecraft:ghast": {
      "fixed_level": 150,
      "ignore_level_cap": true
    }
  }
}

Special Considerations

Passive Mobs in Structures

By default, passive mobs don't receive levels. To level passive mobs:

1. Add them to mob_overrides
2. The presence in mob_overrides allows them to be leveled
3. Only mobs explicitly listed will be affected

{
  "structure": "minecraft:stronghold",
  "mob_overrides": {
    "minecraft:chicken": {
      "fixed_level": 100
    }
  }
}

Important: Without an explicit mob_overrides entry, passive mobs remain level 0.

Override Priority

1. Mob override fixed_level takes absolute priority
2. Mob override level range overrides parent range
3. level_bonus is added to calculated levels
4. attribute_scaling replaces parent scaling
5. attribute_multipliers multiply parent scaling

Tips

1. Use fixed levels for signature mobs in dungeons
2. Use level_bonus for slight variations
3. Enable can_attack sparingly for surprise difficulty
4. Attribute multipliers are simpler than full scaling
5. Test with debug mode to verify correct application