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OVERWORLD · SMALLER FEATURES

Monster Room

Monster rooms, usually called dungeons, are small cobblestone rooms with a monster spawner and usually loot chests. Players raid them for early supplies and build experience and mob-drop farms around the spawner.

No screenshot yetPlaceholder: we have not captured a monster room in game.

From the Minecraft Wiki, summarised

How it generates

Usually forms beside underground cavities, subject to solid-floor, ceiling, and opening checks. Java attempts ten placements per chunk from Y=0 to the world top and four from Y=-58 to Y=-1.

Biomes

  • All Overworld biomes

It's a feature, not a structure: minecraft:monster_room is a Java configured feature, so there's no spacing grid or structure ID. Fourteen attempts per chunk don't mean fourteen rooms; most attempts fail the terrain checks. Bedrock has its own rules, and its attempt count isn't confirmed. Monster rooms generate even with Generate Structures off, and /locate structure can't find them. The update that added them has no known name.

Variants

  • Zombie · Contains a zombie spawner.
  • Skeleton · Contains a skeleton spawner.
  • Spider · Contains a spider spawner.

Notable loot

  • Enchanted Golden Apple
  • Golden Apple
  • Enchanted Book
  • Name Tag
  • Music Disc: otherside
  • Music Disc: cat
  • Music Disc: 13
  • Copper Horse Armor

Mobs

  • Zombie
  • Skeleton
  • Spider

History

  1. Infdev 20100625-1917Java

    Introduced dungeons with monster spawners and loot chests.

  2. Alpha 1.0.14Java

    Added the 13 and cat music discs to dungeon loot.

  3. 1.4.6Java

    Added enchanted books to dungeon chests.

  4. 1.6.1Java

    Added name tags to dungeon loot.

  5. 0.9.0Bedrock

    Introduced dungeons in Pocket Edition.

  6. 1.14Java

    Changed the technical name from Dungeon to Monster Room.

  7. 1.18Java

    Increased generation attempts, including additional attempts below Y=0.

  8. 1.21.6Java

    Replaced saddle loot with 1–5 leather.

  9. 1.21.9Java

    Added copper horse armor to monster-room chest loot.

Read the full article on the Minecraft Wiki ↗

SeedLookout in-game verification

Seeds with this monster room

None of our verified seeds has a monster room yet. The facts above come from the Minecraft Wiki and have not been checked in game by us.

Sources

The description, generation rules, variants, loot, mobs and history above are summarised from the Minecraft Wiki article Monster Room, retrieved 2026-09-30. Minecraft Wiki text is available under CC BY-NC-SA 3.0. We have not checked these facts in game.

Seed numbers, coordinates and screenshots come from SeedLookout's own in-game verification. About verified seeds