... Like, we brought up multiplayer and all that. Battle.net was this thing that, if I remember right, Diablo 1 was the first game to actually use it. ...

I know Diablo seemed to have it also, mostly associated with Blizzard games. I don't remember seeing that being any other companies really doing that kind of thing.
In Context
... We both don't have to buy this game, and I think that really helped out, again, particularly early period of the genre's creation. I know Diablo seemed to have it also, mostly associated with Blizzard games. I don't remember seeing that being any other companies really doing that kind of thing. with Warcraft 2, Diablo, or Starcraft that did the same thing. No, and I think the specific term, like having a spawn copy, I believe that is Blizzard vocabulary. ...