Great game! I really enjoyed the puzzles. The flying twist makes it different from all the other block puzzles I've played, and is just the kind of spice that's needed in this genre. I think even the "infamous" room could have worked, if the game somehow taught me to pay attention to the different kinds of blocks beforehand.
The combat was fun as well, in particular the boss fight. I was planning to do the optional encounter afterwards, but the game ended, so that'll be for another day. The writing and visuals are also top-notch.