Thank you, this is the note we needed. The goal: the sea comes back when the ring at the top runs out. Carry sand (and water, when lava comes) where the ring on the island points, so the wave and the lava never reach the three hearths. The tribe walks to each one, and you win when every hearth holds. You're right that the screen doesn't say this plainly, and nothing tells you a hearth is safe. Next: one line with the goal before the first wave, and a mark on each hearth when it holds or falls. I'll reply here when it's live.