5. The Underground Sun World
In this strange realm, the surface is barren and dark, while life flourishes underground. Massive caverns contain artificial suns—huge glowing orbs suspended in stone ceilings, lighting entire ecosystems below.
Forests grow upside down from cavern roofs. Rivers flow through glowing crystal channels. Entire cities exist without ever seeing the surface.
Survival revolves around light management, underground navigation, and protecting the fragile balance that keeps the hidden suns alive.
