I already listed my first pc game, but I played my first serious MMO starting in 1995 when I was 13, it was a game called Nexus: The Kingdom of the winds (otherwise known as NexusTK) by a company called Nexon that started in Korea and was just getting a foothold in the US market. Think NTK was the first game where different maps, or zones, were hosted on different physical servers. If I remember right they had a grant from IBM for the technology. I still have characters there today so long as they haven't been deleted and I founded one of the first 3 (or maybe it was the 4th) clan.