Note that the author also has a fantasy city generator:
And mansion generator:
If you're into that kind of stuff, there's a world map generator(by different author):
and this amazing tutorial on generating maps:
Also, kinda relevant - awesome talks about modern procedural generation techniques(with AI, Houdini, etc):
How AI will change 3D industry
Procedural world generation for Far Cry
Procedurally generating Manhattan for Spider Man
Mindblowing talks by Anastasia Opara (using cool math, deep learning, and a lot of creativity to create crazy cool stuff)
She is the author of the most impressive procedural generation project I've ever seen:
Also, I myself have made a little tutorial about procedurally generating a 3D landscape in Houdini:
edit: yes, it is, it's in his page
I've used the code of Pixel Dungeon to teach programming - particularly the vision and path finding algorithms.
Of course the code was not built for that but what it lacks in didactic qualities it makes up for in _interest of the students in the domain_
I liked it so much that I went to look at the author Patreon. His main thing is creating medieval fantasy city generator, which looks even better.
It's just wonderful how a single person (I assume) can get the balance of all details and difficulty so right to produce something so rich and enjoyable. Highly recommended.
I would love to read more about how it was made!
Also, it's a shame it's not open source. It would be cool to be able to add features that are specific to your game (for example, replace the fantasy things that can appear in rooms with Lovecraft themed things).
: The demo on that site utilizes keyboard not fancy buttons as in Fantasy City Generator, I recommend to quickly read information about key bindings.