I'd have to say Ultima Online.
I started playing (relatively) late with the Lord Blackthorn's Revenge pack, just pre-Pub 16.
However there has never been anything since that made me feel so immersed, like a second place to live, different characters and adventures, everything about the music and sounds evokes strong emotions when I hear them now. Simply sublime and I'm really not sure how that was one of the first MMORPGs and somehow the industry has progressed backwards from there!
I started playing (relatively) late with the Lord Blackthorn's Revenge pack, just pre-Pub 16.
However there has never been anything since that made me feel so immersed, like a second place to live, different characters and adventures, everything about the music and sounds evokes strong emotions when I hear them now. Simply sublime and I'm really not sure how that was one of the first MMORPGs and somehow the industry has progressed backwards from there!