Well explained -

- However there are more efficient ways of doing this, for example recording the last x, y coordinates and storing them in code, avoiding the need to create an empty movieclip to do it for you. Also, I know this wasn't really part of the tutorial, but the circle collision for the buttons wasn't great, it was bouncing off at the wrong angles ;) and if you moved your mouse after touching the button you could move the ball without it being dragged.

Ohh and add a mute button.

The thing after the main tutorial was pretty cool though.