Maybe entertainment value? Traditionally games have been designed for fun and entertainment, whereas the shift in the last 5 years or so has been towards more emotional 'experiences' such as Flower, Journey, Gone Home, The Last of Us, and Papers, Please.
Contrast this with getting high scores, competing with your friends, collecting pickups, etc. that are all what I would call traditional game mechanics.
Certainly to each his own, but in this case, Papers, Please hits everything I want in the type of game it purports to be, and does so in splendid fashion.