Creator mode:
Drag up to 5 geometries from the toolbar below and drop them on the screen. Tap the start button to let the ball fall and let the ball successfully reach the exit (vortex) after colliding with these geometries.
Stage mode:
Tap the start button to let the ball fall, tilt the phone left and right to give the ball a thrust, and let the ball successfully reach the exit (vortex) after colliding with these geometry. You can tap the refresh button to change the position of these geometry.