Tip the tray to roll the marble into the hole. It accelerates, coasts and bounces off blocks and edges.
Press and hold anywhere on the tray. That point goes down; farther from the centre means more lean. Move your finger to steer. On the first opening board, hold the right side nearest the hole.
Hold chevrons, arrows or WASD to lean. Two keys steer diagonally. Release to level the tray and let the marble coast.
Phone tilt is optional in Settings. Hold comfortably to calibrate, then lean continuously to steer.
Hint shows a dotted route through open cells. Press again to hide it. Restart puts the marble at the start, at rest.
Nothing is counted. Reduced motion draws the tray flat; the marble still rolls.