Has anyone ever heard of starmade?
I got it fo $5 a few years ago and its just popped up on steam. I have had a lot of fun with it in the past and it seems to have been vastly improved. Think Minecraft cross space sim.
If the voxel sandbox is your kind of thing I would recommend checking it out. I have been thinking about setting up a server for Sirius Inc members should enough people care.
CMDR Nyrexis Wolfheart