Dwarf Fortress‘s development is a joy to follow along with, but its age means that each new update, however large, is designed to add greater complexity and nuance to its simulation, and much of the heavy lifting for its procedural world generation was done long ago.
Ultima Ratio Regum aims to be a roguelike crossed with a 4X, and at this stage it’s not as far advanced as Dwarf Fortress nor even really a game. But that means you get to follow along as the fundamental code underpinning its world is formed. Version 0.6.0 was just released and it takes the overworld map added long ago and drills deeper, so that each city that appears upon it can now be walked around at street level. Or as the patch notes put it, you can now “Explore massive and varied feudal cities (each able to support a population of ~300,000+), each with its own range of districts, architectural styles, and buildings influenced by the political and religious choices of its civilization.”