What an amazing game! The color palette, animations, particles and gameplay idea are excellent. I had such a fun time with the symmetry idea, and it definitely has potential to be expanded more. The rotation seemed like it was mapped to backwards controls to me, but that could just be my brain being weird. 
Unfortunately I got stuck at this point where the nook seemed too small for me to jump in, I could just be missing part of the puzzle though. Overall great job, one of my favorites for sure!