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See also: Snow biome

The Ice biome, also known as the Underground Tundra or Underground Snow biome, is a biome that is the underground version of the Snow biome, starting at the Cavern layer and stopping at the lava layer. On the Windows Phone version Windows Phone version and Nintendo 3DSNintendo 3DS version version, the Ice biome starts at the Underground layer. It is composed mainly of Snow Blocks and Ice Blocks. Thin Ice can be found generated over water and breaks when a character falls over 4 tiles onto it (unless using the Ice Skates or another accessory crafted from them). The Ice biome is the only place where Frozen Chests ( Ice Chests) can be found naturally.

In Hardmode, the Corruption, Crimson, and Hallow can spread through it, generating Purple, Red, and Pink Ice Blocks respectively. They are unable to spread through Snow Blocks.

On the Windows Phone version Windows Phone version and Nintendo 3DSNintendo 3DS version version, normal-sized worlds only have a 1/3 chance of containing a snow biome, and their respective underground. Furthermore, Armored Vikings, Snow Flinx, Icy Mermen, Ice Tortoises and Ice Mimics will spawn much more rarely than on the PC version PC version, Console version Console version, Old-gen console version Old-gen console version, Mobile version Mobile version, Old Chinese version Old Chinese version, tModLoader version tModLoader version, and tModLoader 1 tModLoader 1.3-Legacy version.


Unique Treasures
Unique Drops
From Ice Bat:
From any enemy in Hardmode:
From Fishing in overlapped Crimson/Corruption/Hallow:


  • Most enemies in the Ice biome as well as in the Snow biome inflict the Chilled debuff, and more rarely the Frozen debuff.



This content is transcluded from Biome backgrounds § Ice biome (Underground).

Ice biome (Cavern)[]