I've actually enjoyed the game!
It wasn't obvious but curiosity was rewarded.
So it's an idle game where you're develop your city but growing colorful buildings!
I would like more interaction juice. Like reaction on click or hovering buildings.
It might help to keep attention while waiting. Also, I would speed up the whole process for a little to make it more engaging. In idle games that fun were you're moving slowly and then gather so much can be long but for a game jam the length of the game should be pretty small to hit.
Overall, good job!
And don't forget to check other submissions too!