Mines Biome Guide
Fields of Mistria Tide Caverns Guide — Floors 21–39
The Tide Caverns are the second mine biome, spanning Floor 21 to Floor 39. This water-themed area introduces Iron and Sapphire as the main mineable resources.
📍 Biome Overview
| Floors | 21–39 |
|---|---|
| To Unlock | Solve the Water Tablet on Floor 20 |
| To Progress | Reach Floor 40 and solve the Earth Tablet |
| Theme | The Seal |
⛏️ Key Resources
- Iron Ore
- Sapphire
- Stone
👾 Monsters & Drops
- Blue Sapling
- Blue Rockclod
- Ironclod
- Green Mushroom
- Blue Enchantern
- Purple Essence Bat
- Blue Stalagmite
- Mimic
🐟 Notable Fish
- Mini-Whale Shark
- Sapphire Betta
- Transparent Jellyfish
- Silver Squid
💡 Pro Tips
- Ironclods drop Iron Ore, making the Tide Caverns the key biome for Iron tool upgrades.
- Farm Sapphire here before moving into Deep Earth.
- The area's fish set is required for the Tide Caverns museum collection.
🔗 Related Guides
🔎 Sources & Version
Game version: 1.0 · Last updated: 2026-08-13