Guide
Everything you need fits on this page.
Tap: the box turns and the balls fall. Hold: it turns again on its own as soon as they settle.
Drop the white balls through the EXIT. If a red one gets out, the level ends and you lose a life.
Balls that leave one after another in the same turn score 10 · 15 · 25 · 36… Dropping them one at a time will not reach the target on most levels — you have to build a chain.
Turning while a red ball sits in the mouth of the exit throws it back inside: +25 points, once per level.
You start with two, and every 10 levels adds one. While you have lives the level restarts immediately; when they run out you can try again or go back to the menu.
Ten chapters, 250 levels. Each chapter opens a new rule and explains it the moment you get there: sliding walls, exits that jump to a new wall, hatches that open in the ceiling, and late on, a hungry visitor roaming the arena that swallows balls and eats your clock.
Stuck? Chain first. Two balls leaving together are worth far more than two balls leaving apart.