Minimal graphic puzzle, very clean both UI and game itself. Simple and straight forward rules, that's a plus for me.
Got stuck at level 4, spent 30 minutes but couldn't figure it out as i feel I'm missing a piece or a piece has a wrong rotation. That's also another plus for a puzzle game. I'll try again in a couple days, maybe i can finish it.
Might a bit lacking on the innovation and theme interpretation, but it feels like a complete android game.