- Select a path of neighbors: up, down, left or right. No undo.
- Fill the cart in 30 seconds. Overfill, timeout or a blocked path costs the difference in health.
- Exact match: +2 health. Heart: +5 health. Damage comes first; zero ends the run.
- Gems score points. After 20,000, select a bomb to detonate it; nearby bombs chain-react. Blasted gems score but don't fill the cart or heal.
Keyboard: Arrows move or extend the path; Enter or Space starts it.