Fusion and evolution
Fusion feeds material (monsters or items, 5 slots in total) plus gold into a monster to raise its level. Evolution replaces a maxed-out monster with the next step of the same line.
How experience works
The experience needed for the next level is rarity factor × current level, where the factor is 10 (common), 15 (uncommon), 25 (rare), 40 (epic), 60 (legendary).
A monster used as material gives Lv1 value + increment × (Lv − 1), plus 0.5 × the experience it had earned, multiplied by the affinity bonus.
Each rarity step multiplies a material's worth by 5. Deeper dungeons drop higher rarities, so a lap deeper in also yields more experience.
| Rarity | Level cap | Experience to next level |
|---|---|---|
| Common | 20 | 10 × Lv |
| Uncommon | 30 | 15 × Lv |
| Rare | 50 | 25 × Lv |
| Epic | 70 | 40 × Lv |
| Legendary | 99 | 60 × Lv |
| Item | Experience granted |
|---|---|
| Fusion Powder (S) | 100 |
| Fusion Powder (M) | 800 |
| Fusion Powder (L) | 9000 |
| Glimmer Stone | 100 |
| Spirit Pearl | 500 |
| Sacred Orb | 2000 |
| Divine Crystal | 10000 |
| Family material A | 100 |
| Family material B | 500 |
Affinity bonus
Feeding a monster from the same line (same family and element) gives ×2, and sharing just the family or just the element gives ×1.5. Otherwise ×1.
Evolution replaces the monster in place, so nothing is left over. A separately obtained lower-rarity monster from the same line feeds at ×2, so do not throw those away.
What evolution costs
The monster must be at its level cap. Then you pay the evolution stone, the family material and gold.
Epic needs Family material A ×1; legendary needs Family material A ×1 + Family material B ×1. Family materials drop in the dungeons where that family appears.
The level carries over — the old rarity's cap becomes the new monster's level. Experience resets to zero.
| Evolves into | Stone | Family material | Gold |
|---|---|---|---|
| Uncommon | Glimmer Stone ×1 | — | 500 |
| Rare | Spirit Pearl ×1 | — | 2000 |
| Epic | Sacred Orb ×2 | Family material A ×1 | 8000 |
| Legendary | Divine Crystal ×3 | Family material A ×1 + Family material B ×1 | 30000 |
Spare evolution material
Evolution stones and family materials can be used as fusion material (a flat value, with no affinity bonus).
The stones the shop does not stock (Sacred Orb, Divine Crystal) and the family materials can be sold. The shop will not buy back the stones it sells, nor the fusion powders.