Yes, it’s fanfic. No, you won’t mind.
Escalation of stakes is part of the appeal of doomsday end-game modules, but I have a hunch there’s more to it than the natural progression from local to regional to national to global threats. I suspect that apocalyptic stories draw from some dark universal well abiding in the human heart. Or maybe it’s that engine from Event Horizon. Maybe that engine from Event Horizon is the darkness that dwells within the human heart.