I feel a bit like I'm slinging hard drugs here, but might I also suggest RimWorld and Factorio?
AliasVortex
I wanted to echo this by saying that my lab stated as 4 bay Qnap NAS and evolved into repurposed consumer hardware as my interests and needs changed. My current server is an Optiplex that I bought for being small, quiet, and hanging lots of cores and my NAS is just my old gaming PC build with an HBA card (for extra SATA lanes) stuffed into a fancy case. A server is any computer that you say is a server (ideally one with functional network connectivity).
I've got a Steam family going with my siblings and it makes me feel significantly better about my backlog, because even if I don't get to it there's probably something for everyone in the mix somewhere. Plus every now and again it's nice to break out a random indy game that nobody's played and just collectively suck together.
Well they certainly went to a land down under.