Arnold Couturier writes:
Version 1.4 of SceneCity, the city-creation addon for Blender, is out!
Export to Unity has been added. Check the documentation.
Another improvement is the support for objects hierarchies. That means for example when you specify a building or road portion object with the objects getter node, it doesn't have to be a single object (mesh or group instance). If the building is made of an objects hierarchy you can now input the parent object. All your roads and buildings in the city will have all their children, very useful when you need to keep everything as individual objects, down to each individual prop.
Limitations apply when using objects hierarchies with dupliverts, read the updated instancer doc page.
The main plan for v1.5 is porting SceneCity to Blender 2.8, if there are no major blocks. And other goodies I will unveil as I go ;)
Have fun and happy new year! :)