There's Shadowrun, Magic (if that counts), a post-apocolyptic PC game whose name eludes me (early 2000's), and a good number of 80's D&D knock offs for the PC's of the day. Mechwarrior too, and seems like I heard of a Vampire the Masquerade and a Gamma World PC game, but I dunno for sure. The good ones, IMO ( and I haven't played D&D online) are the PC Forgotten Realms/Baldur's Gate series. Good stuff there, for ports of an RPG. But seriously, a pen-n-paper RPG is so far removed from any video game it's not fair to call even the FF series RPG's. What role exactly does one play in those games? They're strategy games, with a fantasy bent.
Edit: After a bit o Google, I got more info. Fallout IMO is based on Gamma World, just as the movie Jonny Mnemonic was based on Shadowrun. That's the PC game whose name eluded me.