I didn't even know Doom had multiplayer until this year. I didn't get my taste of internet after DOS, and didn't experience online multiplayer until I joined Everquest sometime around 1999 or 2000. It's hard to believe it hasn't even been 20 years since the internet became common for personal computers.

PerfectDark 64 and Diablo 2 were pivotal games for me.

PerfectDark allowed me to set up multiplayer games without having to worry about time, connection, or players who take the game way more seriously than I do.

Diablo 2 showed me that it's possible for a game to stay fresh after many months, and even be picked up again years later. That game encapsulated so much of what I hope for in all games.