I'm gonna agree with Mojo Pin here. This question will probably NEVER have an answer. You could always argue that the world of FF9 and 10 are named differently, but hey, The English name for the country "Deutchland" is "Germany", and in Spanish it's "Alemaña". Names for places can and will change as civilizations rise and fall. While it would take æons for geography to change that much, remember two things: A) magic B) who's to say that much time HASN'T passed? I say that it is possible that the games take place on the same world, but there is nothing conrete either way. Unless of course Sakaguchi cares to comment....