This game can be played alone or against another child for more challenge. It also fosters the interaction between parent and child. It's fun and enjoyable. The arrows on the turntable indicate the color and the number. The gems can be moved into the color cans with a magnetic wand. The one to fill all the cans first is the winner. With the unique design, children develop color recognition, number concepts, arithmetic basics, fine motor skills and pen-wielding skills.