Probably Final Fantasy, although I wouldn't consider myself a fan of it. I have...
FF 1 and 2 from the GBA remake "Dawn of Souls" Both of which I've beaten.
FF 3 on the Nintendo DS
FF 4 on the GBA, which I've beaten.
FF 5 and 6 on the Playstation Anthology. Only have beaten 5, I'm getting considerably close to beating 6.
FF 7 on the PS. Just got into the 2nd disk, dunno if I'll beat it.
FF 8 on the PS. That game is sooooo boring.
FF 9 on the PS. It's alright, but I haven't played it enough to thoroughly enjoy it.
FF 10 and 12 on the PS2. I want to beat 10 very badly because it was very atmospheric. I wasn't too fond of 12's gameplay though.
FF Adventure. First Final Fantasy I ever beat and it was on a gameboy pocket.
FF Legend 1 and 2. Very nutty games, not the best but they're real quickies to go through.
EDIT:
FF Tactics: A very nice game although I just started and haven't put many hours into it.
FF Tactics Advance: A real grind fest, but very fun. I rage quitted at the final boss though.
FF 1 and 2 from the GBA remake "Dawn of Souls" Both of which I've beaten.
FF 3 on the Nintendo DS
FF 4 on the GBA, which I've beaten.
FF 5 and 6 on the Playstation Anthology. Only have beaten 5, I'm getting considerably close to beating 6.
FF 7 on the PS. Just got into the 2nd disk, dunno if I'll beat it.
FF 8 on the PS. That game is sooooo boring.
FF 9 on the PS. It's alright, but I haven't played it enough to thoroughly enjoy it.
FF 10 and 12 on the PS2. I want to beat 10 very badly because it was very atmospheric. I wasn't too fond of 12's gameplay though.
FF Adventure. First Final Fantasy I ever beat and it was on a gameboy pocket.
FF Legend 1 and 2. Very nutty games, not the best but they're real quickies to go through.
EDIT:
FF Tactics: A very nice game although I just started and haven't put many hours into it.
FF Tactics Advance: A real grind fest, but very fun. I rage quitted at the final boss though.