Cool.
Overall it's a cool game, with nice soundtrack. The controls are a little odd though - the jumping doesn't "feel" good since it's not button-press sensitive (i.e. you can't control the height of the jump by pressing the jump button with various force) as it's in the other platformers.
I also found a bug of sorts - I seem to be unable to continue past level 20 - the "exit" door doesn't work.