Techtonica is a first-person factory automation game set beneath the surface of an alien planet. Work alone or in co-op to build factories, gather resources, research new technologies, mold the destructible terrain, establish a base of operations, and uncover long-forgotten secrets.
Tried the demo a few months back and it was super promising. The devs seem like wonderful people too. They're a small team and I'd love to see them get some support and for Techtonica to be a success!
Nilaus (I really doubt I need to say who that is in this community) has been doing a short series on the game if anyone wants to see the first few hours. It seems very Satisfactory with a touch of DRG, and that isn't a bad combination at all. It's visually really nice looking, and it has some story elements that I really want to see how they pan out.
Watching the videos, this reminds me of Satisfactory, Planet Crafter, and FortressCraft Evolved - and I have far too many hours in each of them to not pick this up. Looks good!