- Hit the yellow big ball (decorative ball) on the top of the screen with small balls that are laid around at the bottom.
- When the cursor touches the small ones, they bounce.
- When the small ones touch the yellow big one, the number at the upper-right corner decreases.
When the number reaches zero, the yellow big one breaks up into two and then the decorative banner will appear which says "Congratulations" in Japanese.
- The number of balls decreases each time you conquer the stage.