What is the Terraria Frozen Key REALLY Used For?

The Frozen Key is trending again thanks to fresh Discord tips and speedrun discoveries. Players keep asking deep questions about rare materials.

What is the Terraria Frozen Key REALLY Used For? is/are a Hardmode tool for the Ice Palace. These keys open locked treasure chests inside the dungeon. Studies indicate they work only in hardmode biomes. Research shows each key matches one specific large chest.

Getting one means beating Lunatic Cultist first. You farm Undead Viking zombies in the snow biome. Then you trade tokens with the traveling merchant. This unlocks access to better loot and rewards.

Grab keys early to save long run times. Speedrunners use them to skip grinding and dive straight into endgame content. One-line takeaway secure your keys, and the palace rewards will follow.

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What does the Frozen Key open?

It unlocks the large ice chest in the Dungeon's snow layer hardmode only.

Can you get one in pre-hardmode?

No, you must defeat Lunatic Cultist before the merchant sells these keys.