Tap the screen and the ball stops falling and starts falling the other way. That's the whole move, and it's never enough. Collect the stars that hang in awkward places, dodge the spikes that sit exactly where you want to go, and try not to tap twice when once would've been fine. Every star is a point; every spike is a life, three total. The game gets honest about your timing quickly — the spikes multiply, the gaps shrink, and your thumb starts second-guessing itself. One clean flip, star collected, next flip already overdue.
Tap the screen and the ball stops falling and starts falling the other way.