Level 4(?) the censored version, shows the same image as the uncensored in-game and gallery. The gallery/level select thumbnail shows the correct one.

It's impossible to finish the final level, it never unlocks in the gallery and repeats infinitely when you finish.

Also, the ball needs a little random bounce to it. It will regularly go almost completely horizontal and you can only really change the direction by hitting completely on the side of the paddle. Level variety would be nice too.