Dimensions

The Third Dimension is the home to everything that exists in Aldyn. It's the realm of the five senses, the realm of dimensions and time. Nearly all sentients come from this plane and all the events of the story take place here.
As for the other dimensions, each of them have their own seperation of some variety of space into regions and much of it is unexplorable from the third dimension, though some travelers from Rifts have shown small sections of this uncharted space. The second dimension is occupied by the Paradimensionals in the regions rifts travel. The forth dimension is split into a number of places, most notably The Instability. The fifth dimension is home to the Celestials and the Celestial Realm, Heven.