well if you licence transferd yours from a friend them you can't do it to addz for 3 months or what ever it is
its worth it addz yes there is only 3 co-op missions but there really good make sure you are not Issac and you will get a fright hehehe. Very weird I'll tell you, I won't spoil it. And all future dlc is going to be co-op also so worth the 800msp's mate