Underground Corruption

The Underground Corruption is a biome. It is the underground version of the surface-level Corruption. Prior to Hardmode, it will only naturally exist in the lowest parts of Chasms, and only if they are deep enough to reach the Cavern layer. Regardless, once the Wall of Flesh is defeated, more Underground Corruption will be created at and below the cavern layer. It operates similarly to surface Corruption, being composed of Ebonstone and Ebonsand, though it spawns different enemies in Hardmode.

Underground Corruption spreads just like surface Corruption, and similarly can not spread through Hallow. Additionally, on  Old-gen console version,  Windows Phone version,  Old Chinese version, Nintendo 3DS version, and  tModLoader 1.3-Legacy version versions of Terraria, small pockets of Underground Corruption can be created through the breaking of Demon Altars, which will convert a single random Stone Block in the world into Ebonstone upon its destruction.

Underground Corruption does not suppress the spawn of other underground and cavern enemies. During Hardmode, all enemies killed in the Underground Corruption have a 20*1/5 (20%) chance to drop a Soul of Night. In Expert Mode, this chance increases to a 36*9/25 (36%) chance.

On the Nintendo 3DS version, the Underground Corruption music is replaced by the Underground Crimson music. Because of this, the Underground Corruption Music Box is unobtainable in the Nintendo 3DS version.

Note: Most characteristics of surface Corruption also apply to the Underground Corruption. See The Corruption.

Contents

Characters

• ​Devourer
• ​World Feeder
• ​Cursed Hammer
• ​Shadow Hammer
• ​Clinger
• ​Corruptor
• ​Corrupt Slime
• ​Slimer
• ​Corrupt Mimic
• ​Corruption Pigron
  (While overlapping an Ice biome in Hardmode)

Corruption Underground Desert:

• ​Vile Ghoul

Unique Drops

From Corrupt Mimics:

• ​Dart Rifle
• ​Worm Hook
• ​Chain Guillotines
• ​Clinger Staff
• ​Putrid Scent
• ​Greater Healing Potion
• ​Greater Mana Potion

From Corrupt Slimes and Shadow Slimes and Slimelings:

• ​Blindfold
• ​Gel

From Shadow Slimes:

• ​Petri Dish

From Cursed Hammers:

• ​Nazar

From Corruptors:

• ​Vitamins

From Devourers and Corruptors:

• ​Rotten Chunk

From Clingers, Corruptors, Corrupt Slimes, Cursed Hammers, Slimelings and World Feeders:

• ​Meat Grinder
  (Only on )

From Clingers, Devourers, Corruptors, Corrupt Slimes, Slimers and World Feeders:

• ​Monster Meat

From Devourers:

• ​Worm Tooth
• ​Tentacle Spike

From World Feeders:

• ​World Feeder Kite
  (on Windy Days)

From World Feeders and Clingers:

• ​Cursed Flame

From Devourers and World Feeders:

• ​Suspicious Looking Apple

From Shadow Hammers

• ​Mythril Bar
• ​Cobalt Bar
• ​Adamantite Bar

From any enemy:

• ​Corruption Key
  (1/2500 chance, only on )
• ​Corruption Key Mold
  (1/2500 chance)
• ​Soul of Night
  (1/5 chance)

From vegetation:

• ​Deathweed
• ​Vile Mushroom

From terrain:

• ​Ebonstone Block
• ​Ebonsand Block
  (Underground Desert)
• ​Hardened Ebonsand Block
  (Underground Desert)
• ​Ebonsandstone Block
  (Underground Desert)
• ​Purple Ice Block
  (Ice biome)

From fishing:

• ​Ebonkoi
• ​Purple Clubberfish
• ​Toxikarp
• ​Corrupt Crate
  (Pre-Hardmode only)
• ​Defiled Crate
  (Hardmode only)

Music

• ​Underground Corruption
• ​Underground Corruption (Otherworldly)
• ​Underground Crimson

See also

• Underground Crimson
• Underground Hallow
• The Corruption

Gallery

Backgrounds

This content is transcluded from Biome backgrounds § Underground Corruption.

On the  PC version,  Console version,  Mobile version,  Old Chinese version,  tModLoader version, and  tModLoader 1.3-Legacy version, the following backgrounds are used. On the  Old-gen console version,  Windows Phone version, and Nintendo 3DS version, the cavern layer background for any other biome the player is in is dynamically tinted purple.

• 

  Rocky ebonstone wall with green moss growing in the cracks

• 

  Rocky ebonstone wall with small dots of moss placed around

• 

  Jagged ebonstone wall

• 

  Bumpy ebonstone wall

• 

  (Corrupt Ice) Smooth purple ice wall with normal stone rocks, or possibly claws or teeth. There appears to be a frozen eye to the right.

History

 PC version

• Desktop 1.4.0.1: Added Otherworldly Underground Corruption track from the cancelled Terraria: Otherworld.

• Desktop 1.3.0.1: Corruption chasms that extend into the underground layer are now classified as the Underground Corruption, complete with music. Unique enemies will not spawn pre-hardmode.

• Desktop 1.2.3: Added biome specific stalactite variations.

• Desktop 1.1: Introduced.

 Console version

• Console-Release: Introduced.

 Nintendo Switch version

• Switch 1.0.711.6: Introduced.

 Mobile version

• Mobile-Release: Introduced.

Nintendo 3DS version

• 3DS-Release: Introduced.