Astro Colony uses the same engine as 7 Days to Die, but it's quite a bit less grindy. You can build quite complex bases/resource chains. Your base is your ship, so you explore using the entire structure, or spin off a smaller ship/base.

Subnautica is fun, but more focused on exploration than base building. I quite like Satisfactory, but it's not really base-centric as much as resource/manufacturing centric.