Shoot bubbles until you pop them out all! Shoot to create a group of 3 or more having the same color and be smart by eliminating a group with different color bubbles attached to it to get rid off lots of them with only one shot. That is actually very rewarding in points! Shoot to the walls to make the bubbles ricochet at the bubbles you want to destroy to get rid of them as soon as possible and before the rest of the bubbles push downwards.
Use the mouse to aim and shoot.