The Corruption

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Map view of a typical Corruption biome. Vertical Chasms are visible.
May be confused with The Crimson due to in-game text ambiguities. See also: Underground Corruption.

"Making the world evil..."

The Corruption is a hazardous surface biome that presents a dark purple "corrupted" theme. It may exist somewhere in a generated world, generally far from a player's original spawn point. It is the counterpart to The Crimson biome and its red gore theme. A generated world will contain only one of the two, chosen at random during world creation, each with a 50% chance of occurring. The two contain similar hazards, though each has its own unique enemies, items, and blocks. The tools, weapons, and armor obtained via Corruption materials are slightly less powerful than those obtained via Crimson materials, and Corruption enemies are also slightly less powerful.

The Corruption contains purple Grass and Trees, and hazards like Eater of Souls, Devourers, and Thorny Bushes. New players should generally avoid the Corruption until they obtain decent gear and a fair amount of health (via Heart Crystals). The Corruption also features a dark background with limited daylight and unique theme music.

The Corruption area that generates initially with the World is home to Chasms that lead to Shadow Orbs and Demon Altars. Corruption Chasms are especially hazardous to beginning players due to fall damage, and players who have not yet acquired fall protection (eg. Lucky Horseshoe) or a climbing aid (eg. Grappling Hooks), or a decent amount of Rope will have a tough or impossible time contending with them. Chasms are lined with Ebonstone, which can only be mined with a Nightmare Pickaxe/Deathbringer Pickaxe or higher.

Corruption, like Crimson, can also spread to areas not initially infected, though slowly. Corruption spreads much more quickly in Hardmode. Corruption can be seeded in new locations by the player using Corrupt Seeds. Chasms, Shadow Orbs, and Demon Altars will not spawn in Corruption that has formed through spreading; however, Corruption enemies like the Eater of Souls, as well as Thorny Bushes, will spawn. If enough Corruption takes hold in a new area, this area will adopt theme music, background, and water color.

Purification Powder can be used on corrupted blocks to turn them into their regular counterparts. "Purified" blocks can still become Corrupted again afterwards.

Contents[edit | edit source]

NOTE: View Underground Corruption for the mobs that spawn during Hardmode in and under the cavern layer.

The Corruption
Characters Unique Treasures Unique Drops For Sale
Eater of Souls.png Eater of Souls
Devourer.png Devourer
Eater of Worlds.png Eater of Worlds

In Hardmode:

Corruptor.png Corruptor
Corrupt Slime.png Corrupt Slime
Slimeling.png Slimeling
(from Corrupt Slime)
Slimer.png Slimer
Clinger.png Clinger
World Feeder.png World Feeder

Corrupted Desert:

Dark Mummy.png Dark Mummy
Shadow Mummy.png Shadow Mummy
Mobile only.pngConsole only.png

From Shadow Orbs:

Ball O' Hurt.png Ball O' Hurt
Band of Starpower.png Band of Starpower
Musket.png Musket
Musket Ball.png Musket Ball
Shadow Orb (item).png Shadow Orb (item)
Vilethorn.png Vilethorn

From Eater of Souls:

Ancient Shadow armor.png Ancient Shadow armor
Eater of Souls Banner.png Eater of Souls Banner

From Eater of Souls,
Devourer, Corruptor:

Rotten Chunk.png Rotten Chunk

From Devourers:

Worm Tooth.png Worm Tooth

From Eater of Worlds:

Shadow Scale.png Shadow Scale
Eater of Worlds Mask.png Eater of Worlds Mask
Eater of Worlds Trophy.png Eater of Worlds Trophy
Eater's Bone.png Eater's Bone

From any enemy
in Hardmode:

Corruption Key.png Corruption Key
(1/2500 chance)Pc only.png
Corruption Key Mold.png Corruption Key Mold
(1/2500 chance)Console only.pngMobile only.png

From Clingers, World Feeders

Cursed Flame.png Cursed Flame

From Corrupt Slimes

Blindfold.png Blindfold

From Corruptors

Vitamins.png Vitamins

From Dark Mummies

Blindfold.png Blindfold
Dark Shard.png Dark Shard
Megaphone.png Megaphone

From Slimelings

Blindfold.png Blindfold

From World Feeders

World Feeder Banner.png World Feeder Banner

From vegetation:

Vile Mushroom.png Vile Mushroom
Deathweed.png Deathweed
Ebonwood.png Ebonwood
(from trees)

From Deathweed
during Blood Moons:

Deathweed Seeds.png Deathweed Seeds

From terrain:

Ebonstone Block.png Ebonstone Block
Ebonsand Block.png Ebonsand Block
Purple Ice Block.png Purple Ice Block
(Snow biome)

From Fishing:

Ebonkoi.png Ebonkoi
Purple Clubberfish.png Purple Clubberfish
Toxikarp.png Toxikarp
Corrupt Crate.png Corrupt Crate

From the Painter:

Lightless Chasms.png Lightless Chasms

Spread[edit | edit source]

In normal mode (pre-Hardmode worlds), corruption can spread, but only under limited conditions:

  • Corrupt grass can spread in a manner similar to normal grass, converting adjacent Dirt tiles with at least one side open to air (only in the Surface Layer).
  • Corrupt grass can also displace normal grass. Until version, this is true unless the grass has a Sunflower planted on it.
  • Corrupt grass may sprout Thorny Bushes, which can spread corrupt grass according to the same rules.

Naturally-occurring corruption will often be halted by various natural barriers (stone, desert, etc.) before it is even discovered, but care should be taken when creating an artificial corruption biome that it does not spread further than intended.

If all corruption and hallow blocks are purified, then when speaking to the Dryad about the world status, she will say "[name of world] is completely pure. You have done an amazing job!".

Hardmode[edit | edit source]

Once the Wall of Flesh is defeated, a world enters Hardmode. New areas of Corruption and Hallow are immediately created that extend from the Underworld up to the Surface, sometimes intersecting existing Corruption. Corruption begins spawning more dangerous enemies, such as the Corruptor, and underground, the Clinger.

Corruption converting The Jungle (TEdit)

Corruption spreads much more aggressively once the world is in hardmode:

  • In addition to corrupt grass, thorns and plants, Ebonstone, Ebonsand and Purple Ice also generate corruption.
  • Grass can still be converted to corrupt grass, and corrupt grass can cover new dirt as in regular mode.
  • Mud can now be converted into dirt.
  • Jungle grass can also be converted into corrupt grass (changing the underlying block type to dirt).
  • Jungle Thorny Bushes can be converted into Corruption Thorny Bushes.
  • Stone can be converted to Ebonstone.
  • Sand can be converted to Ebonsand.
  • Ice can be converted to Purple Ice.
  • Blocks that are up to three tiles away from an existing corrupt block can be converted (even if uncorruptible blocks are in the way).
  • Sunflowers can no longer stop the spread
Corruption converting the jungle thorny bushes and then spreading

The Corruption does not spread through other materials, even natural materials like clay and snow. Silt can be converted as part of the initial burst when you first defeat the Wall of Flesh, but not at other times.

In order to stop the spread of Corruption in Hardmode, the player must create a gap of at least three tiles containing empty space or non-corruptible blocks. Hallow blocks will also stop the spread of Corruption, but will spawn its own hazards as well.

Corrupted Desert[edit | edit source]

A Corrupted Desert.

In Hardmode, Corruption spreads through Deserts, transforming it into Corrupted Desert. It is very similar to The Corruption: The theme music is the same, and enemies are the same, with the addition of Dark Mummies.

Sand is replaced by Ebonsand. Although their color is different, cacti still drop ordinary cactus when cut. Waterleaf is not able to grow in corrupted deserts.

Trivia[edit | edit source]

  • The game Anti-Idle features an area called the Corruption, based heavily on the Terraria biome.[1]
  • The Corruption and its shadow orbs seems to be based heavily upon a story by H.P Lovecraft, "The Colour Out of Space". In the story a meteorite crashed near the small fictional town of Arkham, Massachusetts. The meteorite twisted the land, drove people insane, drained the life forces of anything around it, and deformed animals into grotesque abominations. [2]
  • This may have something to do with why meteorites begin falling after a shadow orb is smashed.

Notes[edit | edit source]

  • In 1.3, one half of the world generation progress bar will be green, and the other half purple or red, depending on if the world is to have Corruption or Crimson. Not only that, a tree at the side of the world name in world selection has one green/normal side, the other purple/red (indicating Corruption/Crimson respectively). In hardmode, part of the tree will be yellow, representing the Hallow.
  • Creating a new Corruption biome requires at least 200 corrupted blocks, such as corrupted grass, Ebonstone, Ebonsand or Purple Ice Blocks.
  • Although the Crimson replaces the Corruption at world generation, it does not prevent Crimson from being artificially created, by importing Crimson materials to a world with Corruption and vice versa. Spreading remains normal.
  • In the Pc only.png Desktop version, enemies in the Hardmode Corruption have a 1 in 2500 chance to drop a Corruption Key. In all other versions they will drop Corruption Key Molds at the same rate instead.
  • Once you hit the Underground layer, the music will switch to Underground Corruption.
  • Actual dirt blocks are immune to corruption- only dirt with grass can be affected. However, dirt with one side exposed can be converted to corrupt grass, just like normal grass
  • The Clentaminator is an extremely useful tool for removing the corruption. Green Solution is recommended, unless you want to replace it with another biome entirely.
  • A three tile wide gap may not be enough to stop the spread of the corruption on the surface, as corrupted grass can spawn thorny bushes, which can bridge the gap and continue the spread. It is recommended you have three tiles of non corruptable blocks filling the gap in order to prevent this, both above the surface a bit, and down to the underground layer.

History[edit | edit source]

  • Enemies now have the chance to drop Corruption Key instead of Corruption Key Mold. Ebontrees now drop acorns.
    • The spread slows down to 33% of the Hardmode speed after killing Plantera. However it will still convert all blocks as hardmode spread would.[3]
  • 1.2:
    • There is a chance for the corruption biome to be replaced with Crimson biome in a world on generation.
    • Corruptor projectile no longer spreads Corruption.
  • 1.1:
    • Corruption spreads through Sand and Stone, and will slowly turn Mud to Dirt after the Wall of Flesh is destroyed. This allows it to spread into the Cavern layer.
    • An artificial Corruption biome now only requires 200 Ebonstone blocks instead of 500 blocks.
    • Now has own specific background.
  • 1.0.6:
    • Thorny Bushes in growing from Corruption are now destroyed on contact with the player.
    • The Corruption's music has been changed.
  • 1.0.5:
    • Corruption areas now have cave systems connecting many of the chasms.
    • Small to medium deposits of Demonite Ore can now be found when exploring the chasms.
  • 1.0.4: Number of chasms generated in the world is decreased, but each chasm now has 100% chance to spawn a Shadow Orb.
  • Pre-Release: Introduced.
Surface Layers Forest • Desert • Ocean • Snow • Jungle • Mushroom • The Corruption • The Crimson • The Hallow • Space
Underground Layers Underground • Cavern • Underground Snow • Pc only.png Underground Desert • Underground Jungle • Underground Mushroom • Underground Corruption • Underground Crimson • Underground Hallow • The Underworld
Special Biomes Meteorite • Floating Island • Pc only.png Granite Cave • Pc only.png Marble Cave • Spider Nest • Bee Hive • Dungeon • Lihzahrd Temple
Other Living Tree • Pc only.png Enchanted Sword Shrine • Underground Cabin • Chasm • Pyramid • Jungle Shrine • Pc only.png Living Mahogany Tree • Ruined House