Fifa 16 for PC?

We do not have playstation, xbox etc but my boy wants Fifa 16 that can be played on our computer (desktop). I am very confused by all the different sorts of Fifa you can get. I can't seem to find it is this because Fifa 17 is just about to come out. Does anyone know where I can get a copy for the PC and is it similar to playing it on a games station? Or would I be better waiting and get Fifa 17??