Just bought the game today, would like to play 4-player co-op with the kids (bought 2 licenses because I know it does 2-player, wanted to be sure before we buy 2 more).
I saw some threads regarding mods that allow 4-player co-op play, but there was also some confusing info about being able to do it without a mod.
Is there an officially supported 4-player co-op mode?
If so does it apply to the original campaign? If not, what does it apply to?