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The Underground Crimson is a Hardmode biome, being one of the biomes that spawns when the Wall of Flesh is defeated. It is the underground version of the surface-level Crimson, and appears at and below the cavern layer. It operates similarly to surface Hardmode Crimson, being comprised of Crimstone and Crimsand, though it spawns different enemies. Underground Crimson spreads just like surface Crimson, and similarly can not spread to The Hallow (nor to Underground Hallow). Additionally, small pockets of Underground Crimson can be created through the breaking of Crimson Altars, which can convert a single random stone block in the world into Crimstone upon their destruction.

Underground Crimson does not suppress the spawn of other underground and cavern enemies.

A player is considered to be in an Underground Crimson biome when there are at least 200 crimstone/crimsand blocks near the player.

All enemies killed in the Underground Crimson have a 1/5 (20%) chance to drop a Soul of Night. In Expert Mode this increases to a 1/3 (33%) chance.

Note: Most characteristics of surface Crimson apply to the Underground Crimson, with the exception of the enemies that spawn. See Crimson for more extensive information.

Contents

Underground Crimson
Characters Unique Drops
Blood JellyBlood Jelly
Blood FeederBlood Feeder
Crimson AxeCrimson Axe
Ichor StickerIchor Sticker
Floaty GrossFloaty Gross
Crimson MimicCrimson Mimic Template:Pc icon
From Crimson Axes:
NazarNazar

From Ichor Stickers:

IchorIchor

From Floaty Grosses:

VertebraeVertebrae
VitaminsVitamins
Meat GrinderMeat Grinder
From Crimson Mimics: Template:Pc icon
Life DrainLife Drain
Dart PistolDart Pistol
Fetid BaghnakhsFetid Baghnakhs
Flesh KnucklesFlesh Knuckles
Tendon HookTendon Hook
Greater Healing PotionGreater Healing Potion
Greater Mana PotionGreater Mana Potion
From any enemy:
Crimson KeyCrimson Key (1/2500 chance) Template:Pc icon
Crimson Key MoldCrimson Key Mold (1/2500 chance) Template:Console icon Template:Mobile icon
Soul of NightSoul of Night (1/5 chance)

From vegetation:

DeathweedDeathweed

From terrain:

Crimstone BlockCrimstone Block
Crimsand BlockCrimsand Block

From Fishing:

Crimson TigerfishCrimson Tigerfish
HemopiranhaHemopiranha

History

  • 1.2.4: Now has its own specific theme music.
  • 1.2.3: Added biome specific stalactite variations.
  • 1.2: Introduced.

Template:Translation project

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