Game engine works well. Movement feels smooth.
However, there is a bit to complain about.
The game is way to easy. Not only was I able to complete most levels on first try. I also got 3 stars on most on the first try. And when I died, it was because I was careless. Not because it was hard. The level design feels poor and does not offer any challenges.
Other than that, the sound when you pick up a disc is quite annoying after a short while. Same goes for the sound when you clear a level.