Click an empty square. The nearest number in each direction (up, down, left, right) is checked,
and every one of them that can help make 10 clears.
- Each tile = 1 point. Two separate 10s in one click (e.g. 9+1 and 3+7) = +2 bonus.
- Every board has 220 numbers and can always be fully cleared, so a perfect game scores 220 plus bonuses.
- A wrong click costs 10 seconds. When time runs out you can keep going in Zen to try for a full clear.
Blockers: stones block line of sight. Quick clears charge the heat bar, which cools over time.
When it fills you go HOT: points ×2 and clears crack adjacent stones (two hits shatter them). Keep clearing to stay hot.
Every 5th clear in a row triggers a quake that smashes the nearest stone and adds 5s.
Missing (or cooling all the way down) resets the streak, and misses heal cracked stones.