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Underground

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BiomeBannerUnderground.png

The Underground is the first layer below the surface. It starts at a depth of 0ft and can be recognized by its background, which contains many small rocks. Unlike Dirt Walls, this background does not allow the player to hammer holes for daylight or arbitrarily place blocks (i.e. if they don't join onto a nearby block). The music changes when the player goes a few feet deeper past the intersection of the rocky and rockless walls.

The blocks generated in the underground are about an even mix of Dirt Blocks and Stone Blocks. Underground deposits of sand can be found filling some of the caves and Clay blocks can be found too but are less common than in the surface.

The Underground is home to more aggressive enemies than the surface, as well as more treasure. In worlds generated after the 1.1 patch, this layer will contain traps, requiring that the player exercise additional caution. Worlds generated after the 1.1 patch will also contain Underground cabins in this layer.

In hardmode, the Underground may be converted by the Hallow, Corruption or Crimson, but it will not create Underground Hallow/Corruption/Crimson biomes, and monsters will mostly be a mix of surface Hallow/Corruption/Crimson and regular Underground enemies.

If a player continues downwards, eventually they will reach the Cavern layer.

Contents[edit]

Underground
Enemies Unique treasures Unique drops
Giant Worm Head.png Giant Worm
Blue Slime.png Blue Slime
Red Slime.png Red Slime
Yellow Slime.png Yellow Slime
Pinky.png Pinky (rare)
Mouse.png Mouse Pc only.png/Console only.png
Snail.png Snail Pc only.png

At hardmode:

Digger Head.png Digger
Possessed Armor.png Possessed Armor
Toxic Sludge.png Toxic Sludge
Pigron.png Pigron


Jester's Arrow.png Jester's Arrow
Angel Statue.png Angel Statue
Band of Regeneration.png Band of Regeneration
Cloud in a Bottle.png Cloud in a Bottle
Enchanted Boomerang.png Enchanted Boomerang
Hermes Boots.png Hermes Boots
Magic Mirror.png Magic Mirror

Underwater chests:

Breathing Reed.png Breathing Reed
Flipper.png Flipper


From the Giant Worms and Diggers:

Whoopie Cushion.png Whoopie Cushion (rare)

From vegetation:

Glowing Mushroom.png Glowing Mushroom
Mushroom Grass Seeds.png Mushroom Grass Seeds




History[edit]

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