How to Install MythicMobs

MythicMobs is the de-facto standard for custom mobs on Minecraft servers. Custom bosses, dungeon enemies, raid wave mobs , almost every big server uses it. This guide walks you from a clean Paper server to a working custom mob with abilities and a drop table.

1. Requirements

• Paper or Spigot 1.20.1+
• Java 21
• Optional: ModelEngine for custom 3D models, MythicCrucible for custom items

2. Install

Download MythicMobs from mythiccraft.io and drop the jar into plugins/. Restart the server. You'll see a new folder plugins/MythicMobs/ with sub-folders Mobs/, Skills/, Items/, Spawners/.

3. Your first custom mob

Create plugins/MythicMobs/Mobs/MyZombie.yml:

SkeletonKing:
  Type: WITHER_SKELETON
  Display: '&cSkeleton King'
  Health: 200
  Damage: 12
  Options:
    MovementSpeed: 0.28
    PreventOtherDrops: true
  Equipment:
   , DIAMOND_SWORD HAND
   , DIAMOND_HELMET HEAD
  Drops:
   , DIAMOND 1-3
   , GOLD_INGOT 5-10
   , emerald 1 0.25
  Skills:
   , skill{s=Strike} @target ~onAttack
   , message{m="&c[King] You dare?"} @PlayersInRadius{r=10} ~onSpawn

Reload with /mm reload, then spawn it:

/mm m spawn SkeletonKing 1

4. Adding skills

Skills go in plugins/MythicMobs/Skills/. Example Strike.yml:

Strike:
  Skills:
   , damage{amount=8;ignoreArmor=false} @target
   , effect:particles{p=crit;amount=20;hSpread=0.4;vSpread=0.5} @target

5. Drop tables

For loot beyond the inline Drops: list, define a drop-table in plugins/MythicMobs/DropTables/kingloot.yml and reference it via DropTable: kingloot. Tables support weighted rolls, conditions and custom-item references , far more flexible than vanilla loot tables.

6. Spawners

Stand where you want the spawner and run:

/mm spawner create kingspawner SkeletonKing

Then edit cooldown and conditions in plugins/MythicMobs/Spawners/spawners.yml. Spawners support biome conditions, time-of-day, nearby-player counts and more , the engine that powers most server "boss every X minutes" events.

7. Common pitfalls

• Naming mobs with spaces breaks targeting , use camelCase or underscores.
• PreventOtherDrops: true is essential, otherwise vanilla drops stack on top of your loot table.
• Skills with @target need a damage event , use @self in ~onSpawn hooks.

Going further

Combine MythicMobs with custom boss design, Citizens NPCs for hub mobs, and PlaceholderAPI for dynamic skill text. For loot delivery with style, hook drops into a crate system.

Looking for a server that nails this setup end-to-end? Try Astroworld MC , economy survival, custom bosses, full crossplay.