Ah 1999....a good year for PC gaming !!
Started off my multiplayer career with, AvP via MPlayer. Used to be quite a few game clients around; Heat, and Wireplay were ones I also used. Gamespy was but another option, and ultimately the one which seemed to last.
Like it or not, it has helped gamers congregate and network over the years. Now, they seem to be stagnant. I've not had their client software installed for a while now, but then there are not many games I play online nowadays.
The days, when it was fun, has long gone in my opinion
