We are a lot of people involved in game level design, and we are genuinely wondering what some common aspects of architecture are labeled. Generally, this thread is meant to, hopefully, find architects or people well-versed in architecture to the point where I could ask what a specific part of architecture is termed.
As far as the picture goes; The closest thing I can imagine is “terrace”. It doesn’t mean anything if the top wall extended all the way to border the bottom wall, but since it doesn’t, what would one call that specific first floor space?