Hydroneer is a sandbox mining game, a very impressive effort for a single indie dev. It feels rough around the edges, but can be quite immersive and relaxing. You start out with a shovel and a pan, then move up to building an automated system all running on hydro power. It's worth trying if you like those kinds of games, although you'll need to be a bit forgiving. It's a very slow start and there's no inventory system, including for money - which means you have to pick up and move everything by hand, and you can't carry your money and the thing you just bought at the same time. If you do put a few hours into it, it's satisfying to see automation coming together, but there's no end game.