Okay until Level 19
The game was enjoyable and trying to get all the coins added a little extra challenge. I also liked the music.
However, level 19 really lowered my opinion of the game. There wasn't anything wrong with the puzzle/platformer style of the first 18 levels, so there was no reason to suddenly change the style. Levels like that require more luck than skill. Since there aren't medals for this game there wasn't much incentive to try to jump past the same spikes over and over.