Originally Posted by dteowner 
Well, I'd say Morrowind and Oblivion, although that might be a rather unpopular opinion.
Well IMO this is the good example when concessions to vast population kill good series. Especially Oblivion seems like arcade game to me sometimes… But the worst thing is that all RPG games look identical nowadays. No effort to be original and riddles are always too easy. This is the reason why I started to play roguelike games.
And btw have you played Wizardry VIII in ironman mode? That's experience!