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deny-mobspawn — mob spawn categories

The deny-mobspawn region flag blocks spawning of mobs in the listed categories. When a mob tries to spawn inside a region where the flag is set, the spawn is cancelled.

Set it with the standard WorldGuard syntax:

/rg flag <region> deny-mobspawn ALL_HOSTILE

Values are comma-separated and combine freely — the mob spawn is cancelled if it matches any listed value:

/rg flag <region> deny-mobspawn ALL_HOSTILE,ALL_NEUTRAL
/rg flag <region> deny-mobspawn ALL
/rg flag <region> deny-mobspawn ZOMBIE,CREEPER

Use clear to remove the flag again:

/rg flag <region> deny-mobspawn clear

Categories​

ALL_HOSTILE​

Every hostile mob — anything classified as an Enemy mob by the server API, including bosses (WITHER, ENDER_DRAGON). Because the set is derived from the Enemy interface at plugin load, newly added hostile mobs are covered automatically.

Complete list (41 mobs, MC 26.x / 1.21.4+):

BLAZE, BOGGED, BREEZE, CAVE_SPIDER, CREAKING, CREEPER, DROWNED, ELDER_GUARDIAN, ENDER_DRAGON, ENDERMAN, ENDERMITE, EVOKER, GHAST, GIANT, GUARDIAN, HOGLIN, HUSK, ILLUSIONER, MAGMA_CUBE, PARCHED, PHANTOM, PIGLIN, PIGLIN_BRUTE, PILLAGER, RAVAGER, SHULKER, SILVERFISH, SKELETON, SLIME, SPIDER, STRAY, VEX, VINDICATOR, WARDEN, WITCH, WITHER, WITHER_SKELETON, ZOGLIN, ZOMBIE, ZOMBIE_VILLAGER, ZOMBIFIED_PIGLIN

:::note Version differences The list above reflects MC 26.x / 1.21.4+. Older MC versions have a subset — BOGGED, BREEZE, CREAKING, and PARCHED are newer mobs and only exist on newer servers.

WITHER and ENDER_DRAGON are included deliberately — they are Enemy mobs, so ALL_HOSTILE blocks their spawning.

ENDERMAN, PIGLIN, ZOMBIFIED_PIGLIN, and HOGLIN are classified as Enemy by the API, so they are part of ALL_HOSTILE, not ALL_NEUTRAL, even though they only attack in some situations. :::

ALL_NEUTRAL​

Mobs that only attack when provoked. These are not Enemy mobs, so they are not part of ALL_HOSTILE:

WOLF, BEE, IRON_GOLEM, SNOW_GOLEM, POLAR_BEAR, GOAT, PANDA, LLAMA, TRADER_LLAMA, DOLPHIN, FOX

ALL_PEACEFUL​

Every other living mob — anything that is alive and is neither hostile nor neutral. This is an inclusive definition: villagers, wandering traders, bats, allays, armor stands, all passive animals (pigs, cows, sheep, chickens, rabbits, turtles, axolotls, cats, horses, donkeys, mules, striders, …), fish and squid (cod, salmon, pufferfish, tropical fish, squid, glow squid), frogs, tadpoles, and every other non-hostile living creature. Armor stands and allays are part of this category.

The set is derived automatically at plugin load (every alive entity type that is not hostile and not neutral), so new peaceful mobs are covered automatically.

ALL​

Shorthand for ALL_HOSTILE,ALL_NEUTRAL,ALL_PEACEFUL — blocks spawning of every mob.

Per-entity​

Instead of (or in addition to) the categories, you can list specific EntityType names for per-mob granularity:

/rg flag <region> deny-mobspawn ZOMBIE,CREEPER

Any valid EntityType name is accepted, e.g. VILLAGER, WARDEN, ENDER_DRAGON.

Notes​

  • ALL_PEACEFUL and per-mob names do not affect hostile mobs unless ALL_HOSTILE (or ALL) is also set.
  • The flag works alongside vanilla WorldGuard deny-spawn / mob-spawning — it is an additional, independent filter.
  • Spawn cancellation applies to every spawn source that fires a CreatureSpawnEvent (natural spawns, spawners, spawn eggs, structure spawns, summoning, …).