Well, for the amount of buildable stuff you have in the game, 20 mins felt a little long. Now, maybe I played it wrong, but I put out like 5 buildings and then just focused on keeping resources flowing. But I think if you tweaked the win conditions so it was a tad bit shorter, or added more buildings, it could be a really neat little game. Also, still got some of my favorite art in the jam. Kudos to you on that front.