This game is digital and does not include disk or retail box. You will only receive a unique CD KEY code after purchase that needs activation on major clients (Steam, Uplay, Origin) and download from their software in order to be played.
This Naval Action version is made for Steam platform. It requires you to have Steam client in your computer and an active Steam account. To activate the CD KEY you have to click to add a new game in your library. Once you are done with that you can download and start playing the game.