They seem thematic, at least. The Fissures.

The last one was a forest with mist, and everything inside the mist was kind of dreamlike? Supposedly. And things could be made, shaped, and appear from the mist like in a... what are they called? Lucid dream?

The only really random thing is how Fissures tend to pull in things from other places, and I guess that's constant across all of them.