PSA: PS3 copies of DC Universe Online tied to one-time-use codes | Joystiq Figured this would get lost in the existing thread. The PS3 version of DC Universe Online cannot be resold. They contain a one time use encryption key that ties each copy of the game to the activated account. So anyone who is unfortunate enough to try and buy a used copy will never be able to play the game. So don't buy it unless you really plan on keeping it active.