While changing over the balls that are next to each other it is necessary to create a series of three and more balls of the same color. Once the row is formed, it will disappear and you’ll earn points. The more balls are in the row, the more points will be added. In order to interchange the balls, you need to choose two adjacent balls and click on each of them. If a row can not be formed after relocation, the balls return to their previous places.