Tetris with a twist.
Simply put, this is a nice tetris modification.
Tetris was an original concept when first developed in the Soviet - Union and it became popular when it was ported to the GameBoy.
Now these days most tetris modifications include...well tetris but with different color blocks or some other minor adjustment. Your idea was a bit more original, I'll hand you that.
I liked the graphical style you implemented into this game. It was stylish yet not too shiny.
As far as the engine goes, it felt to me as if the control were non responsive at times and a bit slow. Perhaps you are familiar with games that feel a bit slow which results to the player (yourself) tapping your keys very hard? Well, I had the same problem here. So perhaps change the engine a bit so that it runs the controls smoother.
Sound; the music was ok, yet the cat sounds start to annoy me after a while.
It was entertaining for a while and it would probably do good a promotion game of some sort, but it lacks the entertainment value to be succesful as a standalone game.