Game level is represented by a field of 10 to 10 cells. In some of the cells are placed multicolored balls.
Your object is to destroy all balls. Collect balls of one color in critical weight to destroy it. Critical weight is a chain of all balls of one color where the next balls are located on a vertical or a horizontal.
Use a magneton to move balls. Place a magneton in a free cell and it will attract all objects on a vertical and horizontal. There are antimagnets at a level. It are charged by magnet's action and attract or push away balls depending on the sign.