One of my favourite ideas that I've seen in this jam so far. The concept of collecting randomly spawned modules to assemble an ever growing molecule is very fun. I like the cartoony aesthetic and the game is implemented well considering the time limits of the game jam.
If you choose to make this into a full game, then some improvements I'd like to see is making the movement more interesting with acceleration / deceleration curves and maybe making it more of a rougelite with random levels and such.