From the box:'A new game to increase number skills.'There are tiles of three colors with variable number of black and white pips positioned at random on the two ends of each tile. Players match tiles based on color and one of: (1) the total number of black and white pips on the tile halves, (2) the number of black pips on the tile halves, or (3) the number of white pips on the tile halves. - BoardGameGeek