Each cell shows its heat (0–3)
Tap to add +1 heat. When heat reaches 4 the vent erupts — spreading +1 heat to all 4 neighbours. That can trigger more eruptions.
◆ Blue gems = +12 pts
Route your chain through them for a big bonus.
☠ Purple cursed = +10 if erupted
Each cursed vent not erupted costs −6 pts at the end.
You have 10 taps. Chain as many eruptions as possible!