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Editors, please note: When updating information for items that existed prior to 1.3, remember that there are other, non-PC editions of the game to which the old information still applies. Try not to remove this older information as you add new 1.3 information.

Underground Crimson

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BiomeBannerUnderground Crimson.png
See also: Crimson

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 chance to drop a Soul of Night.

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[edit | edit source]

Underground Crimson
Characters Unique Drops
Blood Jelly.png Blood Jelly
Blood Feeder.png Blood Feeder
Crimson Axe.png Crimson Axe
Ichor Sticker.png Ichor Sticker
Floaty Gross.png Floaty Gross
Crimson Mimic.png Crimson Mimic Pc only.png
From Blood Jelly:
Blood Jelly Banner.png Blood Jelly Banner

From Blood Feeders:

Blood Feeder Banner.png Blood Feeder Banner

From Crimson Axes:

Nazar.png Nazar
Crimson Axe Banner.png Crimson Axe Banner

From Ichor Stickers:

Ichor.png Ichor
Ichor Sticker Banner.png Ichor Sticker Banner
From Floaty Grosses:
Vertebrae.png Vertebrae
Vitamins.png Vitamins
Meat Grinder.png Meat Grinder
Floaty Gross Banner.png Floaty Gross Banner

From Crimson Mimics: Pc only.png

Life Drain.png Life Drain
Dart Pistol.png Dart Pistol
Fetid Baghnakhs.png Fetid Baghnakhs
Flesh Knuckles.png Flesh Knuckles
Tendon Hook.png Tendon Hook
Greater Healing Potion.png Greater Healing Potion
Greater Mana Potion.png Greater Mana Potion
From any enemy:
Crimson Key.png Crimson Key (1/2500 chance) Pc only.png
Crimson Key Mold.png Crimson Key Mold (1/2500 chance) Console only.png Mobile only.png
Soul of Night.png Soul of Night (1/5 chance)

From vegetation:

Deathweed.png Deathweed

From terrain:

Crimstone Block.png Crimstone Block
Crimsand Block.png Crimsand Block

From Fishing:

Crimson Tigerfish.png Crimson Tigerfish
Hemopiranha.png Hemopiranha

History[edit | edit source]

  • 1.2.4: Now has its own specific theme music.
  • 1.2.3: Added biome specific stalactite variations.
  • 1.2: Introduced.
Biomes
 
Surface Layers Forest • Desert • Ocean • Snow • Jungle • Mushroom • The Corruption • The Crimson • The Hallow • Space
Underground Layers Underground • Cavern • Underground Snow • Underground Desert • Underground Jungle • Underground Mushroom • Underground Corruption • Underground Crimson • Underground Hallow • The Underworld
Special Biomes Meteorite • Floating Island • Granite Cave • Marble Cave • Spider Nest • Bee Hive • Dungeon • Lihzahrd Temple
Other Living Tree • Enchanted Sword Shrine • Underground Cabin • Chasm • Pyramid • Jungle Shrine • Living Mahogany Tree • Ruined House