Molten Depths
What it takes to open
- Player level
- 30
- Coin cost
- 10M
Signature essence
- Signature essence
- Flame Essence
- Essence rarity band
- Rare
Molten Depths is the fuel world. Its ore table is the shortest in the game alongside Forest Realm: four ores and an essence. An egg here costs 1,000,000 coins.
Coal and crude oil both reach their highest rate in the game here, and refined fuel comes out of both, so when the shuttle tank runs dry the answer is a run to this world.

Molten Depths opens at player level 30.
Everything below hatches from the Molten Depths egg.
The creatures of this world
BlazeyCommonMolten Depths
CindersnapUncommonMolten Depths
CharcrabRareMolten Depths
BlazehoundEpicMolten Depths
MagmorokLegendaryMolten Depths
LavadrakeMythicalMolten Depths
???SecretMolten Depths
What drops here
| Material | Chance per rock | What it is |
|---|---|---|
| Coal | 12.4% | Combustible black rock used for basic smelting operations and low-tier fuel refinement. |
| Crude Oil | 9.4% | Thick, unrefined petroleum liquid used directly in chemical synthetics. |
| Iron Ore | 4.6% | Raw unrefined iron, waiting to be smelted. |
| Copper Ore | 4.6% | Raw unrefined copper, waiting to be smelted. |
| Flame Essence | 2.6% | The burning essence of Molten Depths |
These are chances per rock you break, not shares of one whole, so they do not add up to 100 percent. Anything not listed is plain rock.
Eggs, essence and damage
- Egg price here
- 1M
The one flat step on the essence ladder
Flame Essence sits in the Rare band, the same band as the essence one world earlier. This is the only place the world essence ladder does not climb, and it is not an oversight. A world's essence band follows the rarest material that world introduces, and this world introduces none: everything in its rocks was already dropping somewhere behind it.
Blazey and Magmorok sit at opposite ends of a roster built entirely around heat.
Infernius
The door in asks for level 30, 10,000,000 coins and Sporeveil beaten.
Infernius holds the door out at level 40, inside a 90 second window, and pays 1 Coin Bag 3 and 5 Loot Box 4. The world behind him is the first one with a premium ore in it, so this fight opens a harder kind of mining.
Why come back here
Fuel is a running cost, not a one time purchase, and that is what keeps this world on the route.
- Coal and crude oil both peak here, and refined fuel comes out of both.
- Flame Essence drops in this world only, and the craft recipes above it keep asking.
- Fewer materials compete for each swing here, so a focused coal run beats a coal run anywhere else.
- Its 7 creatures include a Secret the game does not name until it hatches.
The boss that holds the way out

- Boss
- Infernius
- Level needed to challenge it
- 40
- Time limit
- 90 seconds
- What beating it pays
- 1 Coin Bag 3, 5 Loot Box 4
