Really loved this game, the level design is fantastic! I also like the art style and the music very much, everything blends together really well.
It is really polished, I like the fact that you can choose your character and swap the tile colours. Also, I didn't get it on my first try that the butterflies are collectibles, but it wasn't a bad surprise, it made for a fun second run ^^
Frankly, the only thing I regret is that there aren't more levels, because it was just so much fun (and like, it's impressive to make that many levels during a game jam in the first place!)