You start the game with six balls on the board, which are randomly placed. The goal is to remove balls, which is done by having a have a straight - horizontal, vertical or diagonal - line of 5 balls of the same color. You can move one ball at a time - by clicking on the ball and then the aimed square - but only if its way to the desired square is free along straight horizontal and vertical lines. After your every move, another 3 balls will appear on the board. The next 3 balls are shown in the upper right corner next to the board. When you have 5 balls of the same color in a line, they will disappear. In those rounds when you manage to remove some balls, no new balls will appear on the board. Removing more than five balls will score more points. The game ends when the board is full.