DangerDog wrote on Feb 9, 2013, 14:25: Pretty sure none of those games listed had four player co-op, they're also all pretty outdated.
AvP1 has 8 player coop. And if you copied the singleplayer maps to the custom map folder you can play the entire campaign with other players (although it was limited to fighting versus aliens.
It wasnít exactly as easy as just coping over the maps. There were a lot of limitations on those maps. Doors and locks would not work. The maps had to be edited to make a lot of things work correctly. I should know, Iím the one who released the modified coop maps with around 500 Aliens per map.
Creator of the Neverwnter Nights Eye of the Beholder Series of Mods.