- a very technologically advanced spacefaring civilisation has a collection of planets (perhaps a whole solar system’s worth) that are being used for complex terraforming experiments. But it seems that the highly customised environments are being altered by an unknown entity for unknown purposes.
Related
This idea was inspired by the reminder in the third lecture of the Understanding Cultural and Human Geography course that humans aren’t the only lifeforms who have radically altered Earth’s environment.
Category: World-Building