got 2 version of game. physical DVD set (this also got 2 choice, Standard or Collector Edition) or Digital Download. its pretty much self-explained.

if u buy Boxed Standard Set, u'll get DVD and CDkey printed on card inside. u will install the game from that DVD. if you buy Digital, the CD key will be emailed to you (if i not mistaken). then u have to download the game data. 6GB++