There are two control modes ball: Classic, where the bounce angle depends on the point of impact on the racket (steeper as more far from the center) and Demolition, where the bounce angle depends on the angle of incidence and the movement of the racket.
DEMOLITION currently consists of 800 levels but will be adding more. To overcome them you will have various aids, although sometimes they can hinder you work, as can be changes in the size of the racket or the speed of the balls multiplier balls, barrier, fireballs, gravity, change visibility bricks ...
You also have a limited number of wildcards or 'jokers' to skip levels that can not be able to complete.
Apart from this you are just you and your skill. Good luck!