Super creative and clever use of the theme, I loved it! I got stuck on level 10 myself, but I didn't feel like the mechanics were unfair, I was just too slow on the changes... Was really fun and well made, well done!
Glad you liked the mechanics, thank you :D
(Fun fact: In level 10, left path is easier in 2D)
Thanks for the tip! I managed to get to level 13 in the end! (those blue blocks fall fast!)