@LadyOfStars Think of it as aspects that your Other embodies, or represents. A Primary Domain could be something like War, and their secondary domains can be honor and fire. If that makes sense.
TL: DR, God RP, play as a God, make your own realm, build up a world and interact, cooperate or make war with other gods. To what end....you don't know. But you are given one hint to your goal. "Build...and...prepare...". Eventually you will be able to play as various heroes, kings, lords and...
This sounds pretty interesting. I really like the Fallout universe, and have actually have a rather silly idea for faction in mind based on the Nuka-Cola/Sunset Sarsaparilla rivalry. I would very much like to join if you're not full.