I enjoy the concept a lot. Reminds me of those <insertname>.io ones where you get bigger better things. I think you're very close to a "complete" game jam game tbh. My feedback for direct / game breaking fixes is you don't uncapture the mouse when we press E to go to upgrade. So the browser just hogs the mouse so you can't upgrade. If I could upgrade then it'd be considered successful to me ^.^ Also extra features that are high value but somewhat simple to add for future thought would be sound effects for picking up and dropping off sugar, maybe some nice ambient music. I enjoyed it anyway, congrats on the progresss and game you made with your time constraints!