The puzzles are very well designed and the concept is unique. This is at a very high level of quality already and I can't imagine what it could be if packaged into a fully polished game.
Some points I noticed:
- The music is great but there's only a few tracks and it could get repetitive fast
- There seems to be a bug on level 10 where the third (circle) block can shrink more than its supposed to, damaging the solution, forcing a restart. I was able to replicate this only sometimes but not all
- There's another bug on level 12 where after you pass the height-check door. If you place the hat onto the pedestal from the left, then the camera zooms in and you fail for some reason. The dev walkthrough does this action on the right side of the pedestal, not sure what might be causing this issue other than the pedestal script doing some weird camera movement.
- The loading seems to take really long on the web version, perhaps there needs to be a loading screen or some optimization, as the restarts can feel like the game is crashing.
- The boss fight definitely changes the pace of the game, maybe there needs to be a bit more time and leeway for the player to react. It's also possible I'm just bad.
- Since the hat is a separate collider if the player jumps while stretched, they can "hook" onto a one-side collision platform and perform all kinds of funky movement. Not sure if this is intended in the game but it could make for some interesting puzzle solutions.
all in all this is a 10/10 game and deserves at least top 10 in the games I've seen from the Jam.