Well, it is a nice puzzle game. Graphics are fine me. I've got no sound here, so no opinion on that.
Unfortunately there are quite a bunch of bugs.
1. Dunno if I use wrong setting somehow but I lose all the progress made when reloading the game. So everytime I come back I have to start over.
2. Medals don't work.
3. It seems pressing the replay button does not set back the destroyed stone count. So if you need multiple approaches for a level you definitely and up with 1 star. And it's kind of awkward trying again and getting 3 stars for the same solution.
4. Destroying to many stones in one go breaks the game. If you destroy all stones in lvl 2 in one go for example you are stuck. Replay button does not work anymore and pressing the menu button resets the screen, but without any changes.
So this was kind of annoying and I guitted after trying the first 10 levels or so. I might try again later if some of the bugs are fixed.