Ice 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  3DS 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 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  3DS 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  Desktop version,  Console version,  Old-gen console version, and  Mobile version.

Contents

Characters

Pre-Hardmode:

• Cave Bat
• Ice Bat
• Snow Flinx
• Spiked Ice Slime
• Undead Viking
• Undead Miner(uncommon)
• Cyan Beetle(uncommon)
• Nymph(rare)

In Hardmode:

• Armored Viking
• Ice Tortoise
• Ice Elemental
• Icy Merman
• Ice Mimic

In Hardmode with overlapped
Crimson/Corruption/Hallow:

• Pigron

Unique Treasures

• Ice Boomerang
• Ice Blade
• Ice Skates
• Snowball Cannon
• Blizzard in a Bottle
• Flurry Boots
• Ice Mirror  
• Fish (item)
• Ice Machine   

Unique Drops

From Ice Bat:

• Depth Meter  

From Snow Flinx:

• Snowball Launcher

From Armored Viking:

• Ice Sickle

From Undead Viking:

• Viking Helmet

From Cyan Beetle:

• Cyan Husk   

From Ice Tortoise:

• Frozen Turtle Shell

From Ice Elementals or Icy Mermen:

• Frost Staff

From Pigron:

• Bacon  

From Ice Mimic:

• Frostbrand
• Ice Bow
• Flower of Frost
• Toy Sled

From terrain:

• Snow Block
• Slush Block
• Ice Block
• Purple Ice Block(Corruption)
• Red Ice Block(Crimson)
• Pink Ice Block(Hallow)

From Fishing:

• Atlantic Cod
• Frost Minnow

From Fishing in overlapped Crimson/Corruption/Hallow:

• Scaly Truffle   

From any enemy in Hardmode:

• Frozen Key  
• Frozen Key Mold 

Notes

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

History

 Desktop version

• Desktop 1.3.0.1: Thin Ice mini biome added.

• Desktop 1.2: Introduced.

 Console version

• Console 1.02: Introduced.

 Switch version

• Switch 1.0.711.6: Introduced.

 Mobile version

• Mobile 1.2.6508: Introduced.

 3DS version

• 3DS-Release: Introduced.