Quake 4 is almost all campaign. By current #ahem# standards it's a great campaign, ten plus hours long, lots of violence and few skyscraper sized enemies. No good if you want multiplayer.Kratenser said:I'm more concerned about multiplayer here, I'm aware Quake 4 is meant to have a good campaign but, I'm not too fussed about it if I'm honest, I just want a good multiplayer experience.
Quake 3 is your bet, there is Quake Live, it's free, you want it. Quake 3 proper has a tremendous number of mods floating about, although what's still active these days I don't know.