Hello.
My first impression is that the play area is small. Then when I played it, I thought the empty space on the left and right (the area where blocks fall) is too generous.
I like the graphic style and the music.
It really soaks up the brain juice so it might not be something to play when I want to relax.
It was too hard for me but I probably just have to get used to the controls. It really does use a lot of mental energy.
I don't know how to do it, but if you can give little rests or breaks in the middle of the action, that would be nice.
I'd give it a 3. If I was better at games like this then it would be an easy 4.
I did find one bug. I was going crazy with rotations and a pieced stopped early. Here is a pic:
I hope this helps.