If I buy two licenses for this game, and install on two different computers, can I play co-op with my kid? Will it let is log on from the same IP more than once?
Believe that this activates via steam.
So long as you're both on your own steam accounts, it shouldn't matter what IP you guys are paying on (i think).
I own it already and am buying it for my girlfriend so we can play co-op so if it doesn't work that way I'll be pretty irritated. and surprised.