I am looking into picking up GTA IV Complete Edition, and was wanting to know if I would loose anything if I bought it used or new? I have played other GTA games before but have never owned one so I don't know if would come with downloadable content like some other games, or if you have to have a code to get online to play multiplayer. Can anyone help me out with this?

Forums Help Desk Does GTA IV have a downloadable content code?