I also started PC gaming around the same time with Maple Story. I believe I first joined during their open beta & it was such a magical experience since it was my first MMO haha Sometimes I miss those days in gaming where these genres were are completely new and exciting for me.
Edit: Though Maple Story was my first introduction to PC gaming as a hobby, I did play earlier games in my childhood such as Freddie the Fish, Math Blaster...the typical educational CD-roms of that time