This was a fun exercise! I made some modules and built myself a neat little (open) house with it that could function as a level.
There are some things that could still be improved upon, which I might do in a later iteration:
- the floor/ceiling piece has thickness to make it realistic, but now it has z-fighting with the upper parts of the walls that I place under it
- the door needs a ground texture beneath it, at least for the indoors part
- the window is a bit more modern than the walls and door
- it still needs a roof… both on top of the spiral staircase and in general.