You wake up in a different world every time

Every time you fall asleep, you wake up in a different world. This world can be very similar to the real one, with small differences, or it can be completely different. For example, it can be a world in which, unlike the real one, there are no cats at all, even in any language of the world, or it can be some fantasy or a world of the space future, where you will not even be human.