Generates gold by pulling molten metals from deep below the ground.
| Level | HP | Gold Production Rate (per hour) | Max Gold Storage | Extraction Speed | Upgrade Time | Appearance Changes |
|---|---|---|---|---|---|---|
| 1 | 1000 | 1,000 | 50,000 | Normal | 30m | A small molten pit, with glowing vents and a simple ore chute. |
| 2 | 1500 | 2,500 | 100,000 | Faster | 1h | The extraction furnace grows, and magma pipes extend outward. |
| 3 | 2000 | 5,000 | 250,000 | Much Faster | 2h | Chains and reinforced iron plating protect the structure. |
| 4 | 3000 | 8,500 | 500,000 | Highly Efficient | 4h | A massive molten drill emerges, with glowing rune inscriptions. |
| 5 | 4000 | 12,000 | 750,000 | Maximum Output | 8h | Colossal lava vents, reinforced obsidian walls, and industrial smokestacks billow steam. |