People throw around pretentious all the time, just because they think "oh this is trying to be artsy" or "oh this story is supposed to be deep but I don't like it" and somehow they think that that makes the game pretentious. No, no it doesn't. If the game espouses its superiority to other non-artsy games or if the creator does, then yes, it's pretentious. But just because a game is doing something different it doesn't mean that it's pretentious. Maybe it's not doing well, maybe it's not enjoyable, but it isn't pretentious unless it's claiming to be better than others.
As an example: Inception, if it were just made and released, would not have been pretentious. What made it pretentious was the fact that Christopher Nolan straight up told critics that they were dumb and didn't get it if they had problems with the movie. That's pretension (although in this case I guess it's more that Nolan is pretentious rather than Inception itself). If he hadn't said that stuff it would have just been an interesting movie about his personal ideas, and that's totally fine in any medium, whether movies, games, or books. That's what people do, they express themselves, and it's also fine if you disagree with their views or dislike their work. It's only a bad thing if they say that their expression is inherently worth more than the expressions of others.
Another example: Phil Fish is pretentious because he's said on multiple occasions that his detractors and other game devs aren't as good and that he's clearly better than they are. If he hadn't done that he wouldn't be pretentious because he wouldn't have espoused his superiority.
Example of the opposite: Limbo when it came out was just the devs making this game and putting it out there. There were lots of people on forums (including here on The Escapist) who just mocked the artstyle and said "oh it's so pretentious, it's black and white." No, Limbo isn't pretentious because it at no point in time said it was superior, nor did its creators say that they felt it was. They just made a product and put it out there and people immediately went "artsy, thus pretentious."
You don't like games lacking in gameplay or going in different directions or putting an emphasis on characters/narrative/whatever then that's totally okay! You don't have to. But for goodness' sake, please stop saying it's pretentious. It's dishonest and insulting of the game and its creators because you're basically saying they're full of themselves when all they did was create something and put it out there. There are plenty of games out there that the devs just put out without any commentary and yet people jump on the "ermagerd, it's artsy so it's pretentious" bandwagon. Stop. Just stop it. Learn the meaning of the word "pretentious" and then learn that subjective opinion is not fact. And then accept that it's okay for people to like different things and that it's not okay for you to be insulting of it.