It's very surreal, like a fever dream. Everything changes as soon as you look away, no hard boundaries (floor = ceiling and vice versa). Also you can see (especially in the hotbar) that it heavily borrows stuff from youtube vids (which it was trained on I think)
The lack of any object permanence when you look away is so off-putting. I get a few minutes of expecting everything to be that way after playing the demo a bit. It is kind of interesting how sometimes textures will turn into landscapes and vice versa.