I'd put Gone Home and Dear Ester in the broad "Art Game" category, while Depression Quest fits the bill of "Visual Novel" to a tee. As a fan of Visual Novels I know one when I see one, and, though a pretty low quality and fairly short one, it definitely is one. Though then again, Sear Ester and Gone Home aren't exactly good games either. Now Journey, THAT's a good art game. Always remembering that it's a game as well as a story, I can't think of any Art Game out there which I'd play again after finishing it.