Is The Walking Dead a "game"? How about Dear Esther? Gone Home? They're all certainly lovely, heartbreaking experiences, but are they "games"?
I think so. And so does Kotaku reader and TAY contributor Pink_Zapper_Helmet, who goes into detail about why these games can be defined as such. Basically: our definition of what a game is has evolved over the years. So have games, so it makes perfect sense that how we define them should also evolve.