In nuce: The game developer named Joyen shares an approach via Twitter with which you can procedurally generate interiors with Unity.

Our verdict: click command! If you want to find out more about how game development works with Unity, we can only recommend that you regularly visit Joyen’s Twitter profile . Joyen also demonstrates on a YouTube channel how game development works in Unity, using procedurally generated bridges and towers (see below).
Procedural house interior!
Procedural Tower
Procedural Bridges