It was not as exciting as I hoped.
So, when you beat 40 levels and the sounds are off, the music still plays right when you win. Otherwise, cool game. Kinda generic. But cool.
I didn't feel like I "forgot what I knew about gravity"... I felt like there should have been some game mechanic added after each set of ten levels instead of just a "mode" that was unlocked. Like... "these blocks will start to dissolve when they touch each other" or "watch out! these blocks are ticking time bombs!" or "these blocks are attracted to each other"