Nice simple little game, it looks nice and feels nice. Very simple but that's not a bad thing, especially for the gameboy theme. I thought the gameplay loop of optimizing your energy usage so you don't get too much debt while still maximizing your gold was rather interesting, even though the debt didn't really seem to matter. I also found out near the end, that you can dig diagonally! Not sure if that was intentional but it was really cool to discover