Stack the falling blocks and clear lines. Every 20 to 30 seconds the whole well turns a quarter. Keep stacking as it tips on its side, then upside down.
Press the arrow that points where you want the block to go. Toward the floor drops faster, away from it rotates. Space drops, Z and X rotate, P pauses.
Drag to move the block. Tap to rotate. Flick toward the floor to drop it.
Play full screen: tap Share, then Add to Home Screen.
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