Evil Biome

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BiomeBannerEvil.png

An Evil Biome is a naturally spreading, hazardous biome that has generally negative effects on entities inside or around it. The Corruption or The Crimson will always spawn in your world. A generated world will only contain one of the two biomes, with a 50/50 chance of one of them generating. Desktop Version If a player has entered hardmode in at least one world, they can choose whether they want the corruption or crimson to generate in their world. However, they can still leave it up to the 50/50 setting.

This biome is saved as the world's naturally generated Evil biome, and determines:

These will not be affected by artificial Corruption/Crimson (which can be created from materials brought over from another world).
The type of Biome Key Desktop VersionConsole Version/Biome Key MoldOld-gen console versionMobile Version3DS version dropped by enemies is dependent on the biome the enemy is killed in, regardless of whether it's a "natural" biome or "artificial" biome.

The biome is predominately comprised of chasms made from corrupted stone (Ebonstone or Crimstone). However, the biome can overlap other biomes, providing corrupted versions of the Forest, Desert, Snow, Jungle or Ocean biomes. This can be evidenced by the presence of Ebonwood/Shadewood trees, purple/red Cactus and Ebonsand/Crimsand, Purple Ice/Red Ice, or purple/red Palm Trees. Unfortunately, a corrupted Jungle is merely turned into a corrupted Forest, and is only evidenced by a large quantity of water and mud blocks. While in pre-Hardmode, the only biome capable of spreading corruption is corrupted surface Forest with its corrupted grassy blocks (see below for details).

The Corruption[edit | edit source]

Chasms of The Corruption

The Corruption presents a purple "corrupted" theme, with purple grass, trees and stone. Thorny Bushes and enemies like the Eater of Souls and Devourers exist in the biome, presenting dangerous and potentially deadly situations for newer players. The Eater of Worlds can only be summoned in the corruption. The Corruption contains deep chasms, which if not pursued carefully, can result in death from fall damage. Shadow Orbs exist in underground portions of the corruption, mostly at or near the bottom of chasms, in which case you will have to mine to them. Destroying your first shadow orb will always drop a Musket and some Musket Balls, which automatically fulfills the criteria for the Arms Dealer to arrive. Destroying 3 shadow orbs will result in the spawning of the Eater of Worlds, so it is advised that you gear up before doing so.

Corruption Contents[edit | edit source]

Evil Biome
Characters Unique Treasures Unique Drops For Sale
Eater of SoulsEater of Souls
DevourerDevourer
Eater of WorldsEater of Worlds(Boss)

In Hardmode:

CorruptorCorruptor
Corrupt SlimeCorrupt Slime
SlimerSlimer
World FeederWorld Feeder
From killed Corrupt Slime/Shadow Slime:
SlimelingSlimeling(3 spawn at once)

Corrupted Desert:

Dark MummyDark Mummy
Shadow MummyShadow MummyOld-gen console versionMobile Version3DS version

Underground Corruption:

Cursed HammerCursed Hammer
Shadow HammerShadow HammerOld-gen console versionMobile Version3DS version
ClingerClinger
Corrupt MimicCorrupt MimicDesktop VersionConsole Version

From Shadow Orbs:

Ball O' HurtBall O' Hurt
Band of StarpowerBand of Starpower
MusketMusket
Musket BallMusket Ball
Shadow Orb (item)Shadow Orb (item)
VilethornVilethorn

From Eater of Souls:

Ancient Shadow armorAncient Shadow armor

From Eater of Souls,
Devourer, Corruptor:

Rotten ChunkRotten Chunk

From Devourers:

Worm ToothWorm Tooth

From Eater of Worlds:

Shadow ScaleShadow Scale
Eater of Worlds MaskEater of Worlds MaskDesktop VersionConsole VersionMobile Version
Eater of Worlds TrophyEater of Worlds Trophy
Eater's BoneEater's Bone

From any enemy
in Hardmode:

Corruption KeyCorruption Key(from any enemy, 1/2500 chance) Desktop VersionConsole Version
Corruption Key MoldCorruption Key MoldOld-gen console versionMobile Version3DS version(from any enemy, 1/2500 chance)
Underground Corruption:
Soul of NightSoul of Night(1/5 chance)

From World Feeders and Clingers
(Hardmode):

Cursed FlameCursed Flame

From Corrupt Slimes
and Slimelings
(Hardmode):

BlindfoldBlindfold

From Cursed Hammers:

NazarNazar

From Shadow HammersOld-gen console versionMobile Version3DS version:

Cobalt BarCobalt Bar
Mythril BarMythril Bar
Adamantite BarAdamantite Bar

From Corruptors
(Hardmode):

VitaminsVitamins

From Dark Mummies
(Hardmode):

BlindfoldBlindfold
Dark ShardDark Shard
MegaphoneMegaphone

From Corrupt MimicsDesktop VersionConsole Version:

Dart RifleDart RifleDesktop VersionConsole Version
Worm HookWorm HookDesktop VersionConsole Version
Chain GuillotinesChain GuillotinesDesktop VersionConsole Version
Clinger StaffClinger StaffDesktop VersionConsole Version
Putrid ScentPutrid ScentDesktop VersionConsole Version
Greater Healing PotionGreater Healing Potion
Greater Mana PotionGreater Mana Potion

From vegetation:

Vile MushroomVile Mushroom
DeathweedDeathweed
Deathweed SeedsDeathweed Seeds(during Blood Moon)
EbonwoodEbonwood(from trees)

From terrain:

Ebonstone BlockEbonstone Block
Ebonsand BlockEbonsand Block
Purple Ice BlockPurple Ice Block(Snow biome)

From Fishing:

EbonkoiEbonkoi
Purple ClubberfishPurple Clubberfish
ToxikarpToxikarpDesktop VersionConsole Version
Corrupt CrateCorrupt CrateDesktop VersionConsole Version

From the Painter:

Lightless ChasmsLightless Chasms

The Crimson[edit | edit source]

Chasms of The Crimson

The Crimson presents more of a red, gory theme, which differs it from its counterpart, the corruption. Unique enemies that only appear on a crimson world include Blood Crawlers, Face Monsters and Crimeras. The Brain of Cthulhu, the alternative to the Eater of Worlds, can only be summoned in the crimson. Like the corruption, the crimson contains red grass, trees and stone. In the crimson, the stone is called crimstone, and can only be mined with a Nightmare Pickaxe/Deathbringer Pickaxe or better. Like the corruption, the crimson contains deep chasms, which can also result in death if not pursued carefully. Instead of shadow orbs, the crimson contains Crimson Hearts. Destroying your first crimson heart will give you the Undertaker and some musket balls, which, like shadow orbs, will instantly fulfill the criteria for the Arms Dealer to arrive. Destroying 3 crimson hearts will result in the spawning of the Brain of Cthulhu.

Crimson Contents[edit | edit source]

Evil Biome
Characters Unique Treasures Unique Drops For Sale
Blood CrawlerBlood Crawler
Face MonsterFace Monster
CrimeraCrimera
Brain of CthulhuBrain of Cthulhu(boss)

In Hardmode:

HerplingHerpling
CrimslimeCrimslime
Blood JellyBlood Jelly
Blood FeederBlood Feeder

Crimson Desert:

Dark MummyDark Mummy

Underground Crimson:

Crimson AxeCrimson Axe
Ichor StickerIchor Sticker
Floaty GrossFloaty Gross
Crimson MimicCrimson MimicDesktop VersionConsole Version

From Crimson Hearts:

The UndertakerThe Undertaker
The Rotted ForkThe Rotted Fork
Crimson RodCrimson Rod
Panic NecklacePanic Necklace
Crimson Heart (item)Crimson Heart (item)Desktop VersionConsole Version

From Blood Crawler,
Crimera, Face Monster:

VertebraeVertebrae

From Brain of Cthulhu:

Tissue SampleTissue Sample
Bone RattleBone RattleDesktop VersionConsole Version
Brain of Cthulhu TrophyBrain of Cthulhu Trophy
Brain of Cthulhu MaskBrain of Cthulhu MaskDesktop VersionConsole VersionMobile Version

From any enemy in Hardmode:

Crimson KeyCrimson Key(from any enemy, 1/2500 chance) Desktop VersionConsole Version
Crimson Key MoldCrimson Key MoldOld-gen console versionMobile Version3DS version(from any enemy, 1/2500 chance)
Underground Crimson:
Soul of NightSoul of Night(1/5 chance)

From Dark Mummies
(Hardmode):

BlindfoldBlindfold
Dark ShardDark Shard
MegaphoneMegaphone

From Herplings and Crimslimes
(Hardmode):

Meat GrinderMeat Grinder

From Crimson Axes:

NazarNazar

From Ichor Stickers:

IchorIchor

From Floaty Grosses:

VertebraeVertebrae
VitaminsVitamins
Meat GrinderMeat Grinder

From Crimson MimicsDesktop VersionConsole Version:

Life DrainLife DrainDesktop VersionConsole Version
Dart PistolDart PistolDesktop VersionConsole Version
Fetid BaghnakhsFetid BaghnakhsDesktop VersionConsole Version
Flesh KnucklesFlesh KnucklesDesktop VersionConsole Version
Tendon HookTendon HookDesktop VersionConsole Version
Greater Healing PotionGreater Healing Potion
Greater Mana PotionGreater Mana Potion

From the terrain:

Crimstone BlockCrimstone Block
Crimsand BlockCrimsand Block
Red Ice BlockRed Ice Block(Snow biome)
ShadewoodShadewood
Vicious MushroomVicious MushroomDesktop VersionConsole Version

From Fishing:

Crimson TigerfishCrimson Tigerfish
HemopiranhaHemopiranha
Crimson CrateCrimson CrateDesktop VersionConsole Version

From Fishing in Hardmode:

BladetongueBladetongueDesktop VersionConsole Version

From Painter:

DeadlandComes AliveDeadland
Comes Alive

Spread[edit | edit source]

Both the corruption and crimson will spread throughout your world in pre-Hardmode, and more aggressively in Hardmode:

  • Corrupt Grass and Crimson Grass can spread similarly to normal grass, converting adjacent Dirt tiles with at least one side open to air (only in the Surface Layer).
  • Corrupt and Crimson grass can displace normal grass. This can be stopped in pre-Hardmode when the grass has a Sunflower planted on it.
  • Thorny Bushes can grow in the corruption and crimson, which can furthermore spread the corruption and crimson, even over non-corruptible blocks.
  • Non-corruptible blocks (blocks that corruption and crimson cannot spread to) include Wood (any sort), Clay, Ash, Silt, Obsidian, Ores, Gems and Bricks.
  • The evil biomes also cannot spread to hallowed blocks such as Pearlstone.

Hardmode[edit | edit source]

In Hardmode, the corruption and crimson will spread much more aggressively.

  • Sunflowers can no longer stop the spread.
  • Ebonsand,Crimsand, Ebonstone, Crimstone, Purple Ice and Red Ice will now spread their designated biomes.
  • Mud can now be converted to dirt, leaving the jungle vulnerable to the corruption and crimson.
  • Jungle Thorny Bushes can now be converted to corruption and crimson.
  • Blocks that are up to three tiles away from an existing corrupt or crimson block can be converted (even if incorruptible blocks are in the way).

Corrupted and Crimson Deserts[edit | edit source]

See also: Corrupted Desert, Crimson Desert
A Corrupted Desert.
A Crimson Desert.

In Hardmode, the corruption and crimson can spread through the desert, therefore creating corrupted and crimson deserts. In the corruption, sand is replaced with ebonsand, and in the crimson, sand is replaced with crimsand. Unique enemies not found in the normal corruption and crimson can also be found in the biome's desert variant.

Purification[edit | edit source]

See also: Guide:Maintaining world purity
A properly contained Corruption and Hallow, which, while not considered an evil biome, can eventually spread out of control.

In hardmode, the corruption and crimson can spread out of control, sometimes even taking over an entire world if nothing is done. Therefore, efforts must be made if you don't want your world to be overrun.

In pre-hardmode, one can use Purification Powder to remove portions of the corruption/crimson to help slow down the spread. However, it isn't until hardmode that the biomes present much of an issue.

In hardmode, a good strategy is to dig a 3 tile wide hole around the corruption/crimson, containing it. However, near the surface, Thorny Bushes can spread the corruption up to 6 blocks, so the hole needs to be 6 tiles wide.

However, if you want to make removing the corruption/crimson a feasible task in hardmode, obtaining the Clentaminator is recommended. Purchasing the Clentaminator requires 2 Platinum Coin. It can be purchased from the Steampunker, an NPC who arrives after at least one mechanical boss has been defeated. Purchase green solution from the steampunker, and use the clentaminator to wipe out the corruption/crimson. Note that you should keep small contained pockets of the biome, as the enemies that spawn within the corruption/crimson have unique drops that are required to advance in the game.

Tips[edit | edit source]

  • One way to know if your world has Corruption or Crimson is to ask the Guide. He will tell you to break a Crimson Heart if your world has Crimson, or to break a Shadow Orb if the world has Corruption.
  • Desktop VersionConsole Version 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. The step in world generation in which the Crimson is created is called "Making the world bloody", and the step in world generation in which the Corruption is created is called "Making the world evil". Also, 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.
  • Desktop VersionConsole Version In Expert mode, the Vampire Knives are highly useful in virtually all situations. However, the Crimson's boss accessory, the Brain of Confusion, pales heavily in comparison to its' Corrupt counterpart, the Worm Scarf, meaning that the two balance each other out.