A well made game that relies too much on the luck stat. I can't really say that it's a very original idea, which I'm sure you already know since you've used this same formula before, but at least it's done well enough to be interesting. And there are medals to earn, which is a nice bonus. The game looks quite nice, the background music is really relaxing, and it has one hell of a difficulty curve. Maybe instead of "Easy, Medium, and Hard" the levels should be named "Entirely Possible, Not So Much, and All But Impossible."
Skill is absolutely a part of the game, but in the end simply moving on to the next level requires inordinate amounts of luck, as well. Moving on to the 3rd level in the Medium bracket should not take numerous repeated attempts...that's just frustrating and really hampers the game's overall level of playability.
I also kind of thought there would be more to the constellation theme of the game, like actually trying to make certain ones out of crystal chains, but ultimately it's just a naming convention gimmick, so that was a little disappointing. Ah, well. The game is good, but could certainly be improved upon. Three and a half stars from me.