Interesting idea and I love the fact that the shapes makes for the difficulty to be in control of the game.
BUT, I do tend to agree with @sutabi, the game is really very difficult and it might frustrate the crap out of anyone trying it for the first time.
I would make it easier at least in the beginning of the game.
And then well done on getting and Android game through the process and onto the play store.
Welcome to the CLUB...