Bubbles are lined up at the top of the screen in horizontal rows. Click your mouse to trigger the shooter bubble you have at the bottom of the screen, in order to hit the rows of bubbles above. Bubbles will explode if they are hit by another bubble of the same colour as long as the total group of adjacent bubbles is three, or more. You get points for every bubble you explode, with bonuses awarded for exploding more than six bubbles a time and for causing groups of bubbles to drop off. You have three lives before another line of bubbles comes down and moves all the bubbles down the screen. You lose a life if you fail to explode any bubbles between moves down. Once a new line has come down you will be given three more lives. When you have removed all bubbles of a single colour, that colour won't appear again, but the number of lines that come down each time will increase. Good luck!