| Category | Worlds |
| System | Hells |
| Focus | Negative Entropy, Evil, Cold |
| Formed |
Caina is one of the realms within the expansive Hells system. The majority of the domain is blanketed in snow and ice, buffeted by relentless gales and recurrent blizzards. A substantial portion of the world's operations transpires below the surface.
The sovereign of this domain is the Archdevil Mephistopheles.