Myself... i judge how great a game was by how much of it I remember past all those long years..
I remember FFVI like i played it yesterday, I mean... Kefka dude, I LOATHED that bastard clown.
All i remember from VII was Sephiroth and how i didn't care when Aerith died because i was so into Tifa.
Now, FFVIII I remember almost everything, It's funny though i can't remember the ending.. I know you fight Ultimecia and you kinda have to remember each other.. and after that? what happened?
FFX was great in every way, it's true i played it way later than the others.. but I don't think I'll ever forget some of the scenes.. I Loved Waka and Lulu
FFX-2 was cool, but much less epic, I just remember Rikku was HAWT i never cared about Paine, I've always found Yuna kinda lame (easily the weakest point in FFX)
FFXII is way fresher in my memory... and I really do love it.. but i'm pretty sure i'll end up forgetting most about it.. there is no single character that really moves me (as much as I love Balthier and Fran) they simply are no Cyan, Sabin, Edgar, Tifa, Barret or Quistis. I think it's underrated alright.. but it simply is a great game, just not an unforgettable game.
Listen to the voice of reason, then do as I say.
