The Underground Corruption 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 Corruption, and appears at and below the cavern layer. It operates similarly to surface Hardmode Corruption, being comprised of Ebonstone and Ebonsand, though it spawns different enemies. Underground Corruption spreads just like surface Corruption, and similarly can not spread to The Hallow (nor to Underground Hallow).
All enemies killed in the Underground Corruption have a chance to drop a Soul of Night.
Note: Most characteristics of surface Corruption apply to the Underground Corruption, with the exception of the enemies that spawn. See The Corruption for more extensive information.
Blindfold (from Corrupt Slimes, and Slimelings)
- Even in pre-Hardmode, sometimes the Corruption can go so deep that the bottom would count as a Underground Corruption.
| Game mechanics|
|Attack Speed • Breath meter • Buffs • By hand • Consumable • Crafting station • Critical hit • Damage • Data IDs • Day/Night • Death • Debuffs • Defense • Difficulty • Environment • Event • Fall Damage • Game controls • Ghost • Health • Inventory • Knockback • Lighting mode • Mana • Map Size • Minimap • Minions • Modifier • Moon • Music • NPC drops • NPC Spawning • Placement • Player stats • Rarity • Spawn • Storage • Use time • Value • Velocity|
|Surface Layers||Forests • Deserts • Ocean • Snow • Jungle • Mushroom Biome • The Corruption • The Crimson • The Hallow • Space|
|Underground Layers||Underground • Cavern • Underground Snow • Underground Jungle • Underground Mushroom • Underground Corruption • Underground Crimson • Underground Hallow • The Underworld|
|Special Biomes||Meteorite • Giant Tree • Floating Island • Spider Nest • Bee Hive • Dungeon • Lihzahrd Temple|
|Treasure Rooms||Underground Cabin • Jungle Shrine • Ruined House • Pyramid|