Hmm... interesting concept...

I'd rather not bring in "other beings like ourselves," because that means that the gods came from somewhere, and then somewhere there are more of them. It brings them away from god-hood. And I'm certain that there are ways that other gods could appear, but to me it has always felt like, to be a god and not a... being, the gods need to be intrinsically linked to the universe itself. And that means it is at the beginning, and it will be until the end. That is my own bit of unconventional-ism, if you like.

The other possibility is that the main gods, the ones who would be accepted, and also not the ones we would be playing, are not... people-ish-things. They aren't like the Greek or Hindu gods, or even like the Christian god. They are... conscious essences, constant in whatever manner in which they exist, be it chaotic or unchanging, and a part of everything. The ones that we would be playing could either be... like children of these essences, or somehow born due to any conflict that may occur between the essences?

Hmm... I actually have an idea somewhat like that which I haven't thought about in a while... It only has one of the "other" type of god, but I'm sure that could be worked around... Probably better to build from scratch, though. Preconceived notions, and all.