Purdue Fantasy Club

Jearn: The planar home of Adventurers (also identified as Portal I from the Alpha Site)

Cahyali: A smaller world where adventurers also hail from, which features much larger landmasses than Jearn.

Infero: The land of the dead, the fallen, once-beautiful plane of Cielo. It is the passing place that souls go to before reaching their afterlife.

Kurago: A plane of existence attached to most other planes.

Alpha Site: The Centralia Guild of Wizzards extra dimensional portal farm

The Planar Sea: The extradimensional space that planes of existence, well, exist in. Theoretically inhabitable to life (that we know of), and there is no current way to travel to the Planar Sea.