I know this is vague and probably very confusing, but that's the idea. You're not supposed to know the rules because your character doesn't. I will explain more in game, perhaps. But for now, if you wish to join, simply state which way you are going for now. I will accept only 1 person...possibly more, if they promise not to read the other person's responses.
Where am I? ... Who am I? ... I look around and see a strange environment around me, full of computers, tubes, cameras, and surgical instruments. I realize I am laying down and am about to stand when the environment abruptly changes. Now I am in a different environment. It's dark. So dark that I cannot see. But then I turn and see that there is light on the other side, so bright that it blinds me. Somehow I know that I am supposed to go somewhere. Will I go through the light or the dark?