I started playing World of Warcraft in 2008 and still raid weekly with the same guild over a decade later. It was Tibia that first got me interested in online roleplaying games, which I started playing in 2003. Before that Neverwinter Nights, Diablo 2, and Elder Scrolls: Morrowind got me interested in roleplaying games on the computer.
It wasn't until my first formal programming class junior year of high school that I really got into computer gaming. After finishing our work we were permitted to play games on the lab network while waiting for the rest of the class. It was there I got into first person shooters, primarily Quake.