Some minor issues / things that could be nice if they were tweaked:
A "click to continue" prompt
Music distorts a lil
A fun thing to do would be to have all (maybe capped at 20 or something) on the screen at the same time when done, having the crawl around and just be cuties. It's a bit out of scope, but I'd really love to see everything at the same time, so it gives the feeling that I've contributed to a large project.
Great work, super cool you got something with multiplayer set up for the jam!