The game is mainly developed in the form of levels. Each level presents a unique scene with small balls of various colors, obstacles, and mechanisms, which are blocked by pins at different positions. The player's goal is to pull out the pins in the correct order so that the small balls can pass through the channels and finally fall into the corresponding containers or trigger specific mechanisms to complete the level. For example, in some levels, all red balls are required to be introduced into the red container, and blue balls into the blue container.