Your main goal is to progress through the bubble ceiling as far as you can to maximize your score before you run out of bubble shots. Also, remember to use special lightning bonus-up bubbles that will pop large amounts of bubbles at the same time.
If you hit 2 or more bubbles of the same color as the one you shoot, they will pop! Any bubbles that are no longer connected to the ceiling will fall down.
Just like other classic bubble shooter games, use the mouse to aim your bubble shooter and click the left mouse button to shoot a bubble.