Love the art. The real fun starts at level 10! At about level 16 or so I made it to a section that was impassible (the spikes were overlapping so there was no where to land in between them and the distance was too great to jump.
The top 10 board didn't seem to work for me, and there are some misspellings in the game.
I rated 4 stars as well. It's fun and the pencil art is wonderful, overall the game just needs some polishing up.