Own a mighty cannon and make all of the buckets filled with balls! Once you do that, you will complete a level, then move to another one. The balls are never-ending and so are the buckets to fill. Using the controls, you can move the cannon and change the trajectory of the ball that will fly from it. Shoot and make sure that you aim precisely before you place the button. What is more, there are different types of cannons to try out! You will unlock them after completing a certain amount of levels.