Medieval Fantasy City Generator
I love this sort of thing, but the far more interesting challenge to procedural games is engaging the player emotionally and intellectually, and giving them a sense of long term narrative progression. I'm mainly thinking of RPGs here, but it's a problem that surfaces up to this day in things like No Man's Sky. Even in non-procedural games that nevertheless allow you to continue playing in a world after all the storylines are concluded (e.g. GTA, Assassin's Creed), you still have this sense of emptiness when you realise these houses don't really have anyone in them, and there's just a city full of mostly silent people walking aimlessly around. Accumulating money or equipment isn't interesting anymore because there's nobody left to fight.Dwarf Fortress puts in a lot of work to keep worlds and interactions rich. Even games like Football Manager are fundamentally role play, and the constantly evolving rivalries and personnel involved keep things fresh well into the game. Honestly think small but rich villages would be more interesting than massive but realistic looking cities, but this is still impressive stuff.