Looking at the forum, this is the problem for msny people. Where do you get the promo codes, why are they all either not valid or expired? Why don't you send them via news or email people with the codes and explain that they are time stamped? You will have people stopping to play this game. I've already stopped playing Mech Arena because none of the codes worked and I got fed up. I'm getting that way with this game. Please help.