For The Stanley Parable: Ultra Deluxe players, this guide will show you show you how to escape the Mind control room by squeezing out of the map bounds
Escaping the room
I assume that the reader is familiar with the Mind control facility in the base game so if you do not know what that is [SPOILERS] stop reading this untill you know.
Ok, with that out of the way, when I refer to the mind control room I mean the Room with the many buttons in it just before the REDACTED happy ending. This is the room just after the elevator ride from the tv room.
once you enter:
On your left will be a staircase
a big button on top of it
Get under it and crouch. then walk toward the descending stairs until you have no more headroom, then walk towards the wall, all while crouching.
You will then fall into a small box of a room where you can look up and see the room from underneath.
The narrator appears to be unaware of your ‘escape’ but you are in a box similar to the REDACTED ending, where you also leave the game area. I have not tried this with the TURN BACK ON ending yet, so idk if this is any help.