Mine Biome Guide

Ancient Ruins (Floors 81–99)

The Ancient Ruins are the fifth and final mine biome, running from Floor 81 to Floor 99, with special stops at Floor 90 and Floor 100. This darkness-shrouded area is the source of Mistril and Pink Diamond.

Ores & Key Resources

• Mistril Ore
• Pink Diamond
• Voidite

Monsters & Combat Tips

• Pink Sapling
• Purple Rockclod
• Mistrilclod
• Void Cat
• Mimic

Mining Strategy & Survival Tips

• Every floor starts in darkness; use Sacred Light or wear Mistril equipment to expand your light radius.
• Sacred Light lasts for about 5 real-world minutes and carries across floor transitions.
• Floor 90 contains the Priestess Tablet, Field Room, and Dragon Forge; Floor 100 holds the Final Seal.

Mine Fish Species

• Luminescent Crab
• Winged Shrimp
• Gazer
• Giant Jellyfish
• Coelacanth

Data verified against the official wiki and community sources.