Interesting to see a completed grinding game in a game jam. Can be a bit tedious, but overall it's well implemented. The mechanics are working, I haven't got stuck anywhere and the visual feedback is enough to let you know what you can do and what you can't. It was a pleasure to dig and find your way to the destination, and of course, collecting minerals and upgrading your ball. Which looks like a charged electronic ball from half-life 2. A nice 3d game submission!