Your goal is to clear all the gems from the board. You shoot at them with more gems, and when three or more of the same color come together, they all explode. Point your mouse to where you want the next gem to go and click to fire the shoot. The more gems blow up at one shoot, the increasingly more points you gain. Besides, those gems that fell apart from the rest will explode too. If your shoot fails to detonate any gems, you get a foul, and when there are several fouls, a new line of gems appears at the top. The number of misfires allowed before gems will advance again, is shown by the number of silver gems in the bottom left corner. There is no draw in this game, either you clean all the gems off and your score doubles, or they move all the way down on you. Have fun!