Nice game! Smooth interface and atmosphere with simple yet logic controls.
I support what sdotimas said about difficulty, although I understand that it must be tough to come up with new ideas for every dificulty.
It could have been a it tad more challenging though.The only challenge I did not quite get was one in which you presse a button and a screen containing a tetris like figure cahnges into some other tetris like figure.
Just a thought, I find it funny when people post comments on how inteligent they are for completing a game... Seem ironic and contraditory