I don't know, Fate had Angra Mainyu threatening to unleash hell on earth and wipe out humanity, Apocrypha had two distinct plots that would have had global impact, and Strange Fake is only happening because Zelretch is trying to suss out a worldline where the events in Snowfield don't end in worldwide destruction and extinction.
The only difference is that the stories themselves focus more on the characters than on "We have to stop x to save the planet."