Aim and shoot with the mouse. Your goal is still to eliminate balls by colliding them with their similarly-colored mates. You're limited to just a few. In order to keep on playing, you'll have to replenish your supply by eliminating balls that are already in play. The game is divided into 10 levels, and with each new level you must account for an additional ball color. Each additional color increases the difficulty greatly, so while it's possible to breeze through the first few levels, this is not an easily beatable game.
A much-needed difficulty ramp that does a great job of sucking the player in, then cranking up the challenge before monotony sets in. There's also a sense of urgency in Bubble Cannon 2, which gives importance to every shot. Under threat of a dwindling ball supply, each shot must be put to the greatest strategic advantage — whether that means eliminating balls from the field or clearing the path for future shots. In short, Bubble Cannon 2 is engaging and very addicting!