Such a wonderfully amazing game! I was addicted almost instantly. It provides such a nice, calming atmosphere, all while you rage over repeated failed attempts to reach the fabled crystal at the end of the track. It is very challenging at some points, yet it has such a simple and straightforward theme.
The one caveat, like many other reviewers say, is the number of levels--it left me wanting just a bit more. However, I respect the time and effort that goes into each and every amazing level, and I greatly appreciate the developers of this great, time-consuming game.
And, what's more, it's free--without any in-app purchases!
Highly recommended!!!
~A Reviewer~