First of all, it depicts in the photo that there are 3-4 balls but it comes with only one. Secondly, it doesn't launch the ball but simply drops it outside. There is no speed in the ball throw and it doesn't even go for one meter.
Son is just playing it by rolling and that too is not comfortable due to its very less height.
Looks very entertaining product but it is not worth the money and total waste of time.