Awesome game! Just finished all the levels. The beat and the music are super satisfying and made me feel better when I got stuck on some levels. Well done!
Puzzles are all very interesting and engaging, but the difficulty curve is steep at some levels. From my point of view, level 3(choose 3 blocks among many blocks),6, and 8(connect all the 6 blocks into a 2*3 rectangle in correct order to pass the obstacle) are the most difficult ones. Other levels, especially the last two levels, are much easier than these three. In general, I expect there would be a super difficult brain twister in the last level, but instead I easily passed the last one.
Anyway, this is a very good game made in 48 hours. Well done overall!