Hi I wrote a Godot 4 city loader for your awesome app which can be found here:

https://github.com/tavurth/godot-watabou-city

However I found a few bugs:

1. When a road crosses the wall there is no break in the wall

2. The rivers never quite reach the sea

3. The walls don't meet back at the starting point

4. The building types are not specified? (e.g. Castle)