As per some of the discussion below, I just want to make sure I understand what's going on with the differences between worlds. When we pick which world our characters are stuck in, are we choosing between "asleep in the real world but creating dreams for others to explore" and "exploring others' dreams" or "awake in the real world" and "asleep in the real world, but exploring dreams created by other people"? If the former, where are the bodies of the people stuck in the dream world?

Basically, what is it going to look like: are a bunch of people in Union discovering that a bunch of their friends won't wake up, or is it the people in Union who can't wake up because they're creating the dreams?