Groupees Be Mine Endgame bundle grab bag key. I know only one title from this bundle and it's ENIGMA: - a very good visual novel localized by Fruitbat Factory. Unless you hate VNs (which aren't voiced), I recommend getting the bundle/game.
My review (in Polish - well, you can check the final note or try your luck with Translate Google): http://swiatgry.pl/recenzja/pc/1121,enigma