I have discovered recently Songs of Syx and I'm really addicted. It has the perfect blend of Rimworld, Dward fortress (with a bit better graphics and not as complex) with more classic city builders and mass scale battles and world domination, in fact it is for me what I wanted Rimworld to be.
It has a free demo, I tried it and purchased the early access 1 hour later.
I love Rimworld for the stories it generates and the focus on the citizens but I was never into body parts harvesting etc. I was into it mainly because the city builder/survival but Songs of Syx is much more about that plus it has much bigger scope with cities with thousands of citizens and mass battles.
The developer is crazily active, releasing several beta patches daily if you opt in for the beta in steam.
I highly suggest this guy in youtube for tutorials, it explains all the basis perfectly.
https://www.youtube.com/playlist?lis...cSNK1RsuH39Pcq