No I mean why you download all of them at the same time o.O.
I usually download a game - play/finish it then back it up game and save file to my external HDD - delete the game on PC but keep the save file - rinse and repeat with another game ;o.
Although I do keep a few games such as Left 4 Dead 2, CSGO, etc.
Those are some great games! Play bioshock 1 - its good
Because if I decided that I wanted to play a game one day, I'd have to wait at least a full day. So I have it all downloaded.
I've played Bioshock, but only the first one for the most part.