I'm finishing every game 100% before rating it... and this... this was exhausting
Ok before getting to the bad stuff, I'm gonna say that I gave you a 10 both in innovation and theme, because taking a concept as simple as tetris and adapting it so well to the theme is something incredible.
But everything, and I mean everything, that you could do wrong with this incredible idea, you did wrong.
The game is way too RNG based, and that combined with some less than good level design makes for some really frustrating levels, The best way to explain this is by saying that the last level was way more fun than all the other ones combined.
Also there shouldn't be two Z pieces, one should be able to rotate enough to be both, and that would've made the game a lot less frustrating. Also the audio gets really annoying really quickly.
I spent way too much time playing this game, but the ending was so cool that I think it was actually worth it.
I still really liked the game, if you couldn't tell.