About Trial Chambers
Read the Trial Chambers guide for recognizing copper-and-tuff rooms underground. Browse its mobs, keys, notable rewards and trial tips when preparing to explore the chambers and their vaults.
STRUCTURE LABEL • OVERWORLD
Trial Chambers
Biomes: Underground between roughly Y=-40 and Y=0, any biome
How To Find
Look for copper and tuff-brick corridors while caving between Y=-40 and Y=0; the copper bulbs and trial spawner glow give them away.
Mobs Found Here
Notable Loot
Trial Key
Ominous Bottle
Emerald
Diamond
Wind Charge
Mace
Heavy Core
Arrow
Tips
Trial Spawners endlessly spawn waves; clearing them unlocks Vaults with a Trial Key. Ominous Trials (drink an Ominous Bottle) give Ominous Vaults, the only source of the Heavy Core used to craft the Mace.