Got 25 games now and I've only got a few I've not played, got sacrifice & giants during the promo & haven't played sacrifice yet, haven't played teenagent beyond checking it was working. I've not played the 2 stronghold games yet but I only got them yesterday and they were supposed to be a gift for my sister but I hit the buy button without thinking about sending it as a gift.
Oh I also haven't played abes exoddus because I haven't finished abe's oddysee yet so that doesn't count.