Providing feedback for the Jam!
Concept is definitely interesting; I like the idea of having to figure out the optimal shape to play as based on the level. Two quick feedbacks:
1) Took me several seconds to figure out what I was supposed to do from the menu page. Perhaps slightly better visuals so it's clear I'm supposed to jump into shapes/menu objects to select.
2) After completing a level, I'd like more feedback to know I actually passed. There were times where I was pretty sure I passed the level with 1 second left, but I just couldn't be 100% sure because no level pass screen or indicator.