The concept and creativity are amazing. Gives me nintendo/marioparty/paper mario vibe with the animations, sounds and funky gameplay. However, the mouse controls made is super hard for me, I think some sort of Button control would be amazing to quickly change and test it.
Agree with other comments that a tutorial would finish it all, but understandable with the time constraints. It could teach people a lot about basic transformations and effect it has on shapes. Here you have a cube, change it into this shape etc. Then after a while you can ramp up the levels to more difficult puzzles, slicing some shapes up, rotating, extruding(!?), zoomin in and out etc. Also, while I am a dark mode user, I think the silly vibe match better with white and bright colours (ala paper mario).
All in all, great creative concept that is very unique, perfect for a game jam, but I think creating a full (small) game out of it might be tricky to design (but prove me wrong :)