That particular image was taken from a build they were showing off in a livestream, and they said during that stream that there was a bug that made the Masteries show the exact same contents as the base techs, so I wouldn't put too much stock into it.
Looks like there's some Songhai unique buildings there... damn shame the video quality is so poor.
Concentric rings of walls were pretty much the norm. In a typical setup there were three: the outer city walls, the castle proper, and then the inner keep (or donjon).Building a Motte and Bailey inside an already walled city makes my head hurt!
To be fair, given that you can only build out one urban tile at a time, this Motte and Bailey likely used to be outside the city before the population grew and the urban area expanded around it.
On the other hand, the White Tower, the original part of the Tower of London, is one of the largest donjon structures in Europe, and has two other sets of walls around it, and the only reason it doesn't have a motte under it is that it was built on Tower Hill and so already overlooked the city of London of the time.
The outer city walls are indeed pretty monstrous. I think it's a missed opportunity that the different technological stages of the walls have almost exactly the same dimensions, to the point where it's rather difficult to tell them apart. It would have helped both with visual recognition and historical immersion if they had made the Ancient walls lower and thinner than the Medieval walls.
eh? Norman Motte and Bailey stone walls has no catwaks? meow. What does it do? a kind of military base or fortification? or administrative center?
And Norman Cavaliers to meet Mongolian Keshiks in the wide open field.
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