Kojima said he don't think games are art, for me this man can go fuck himself. Never liked his games anyway
Feel free to use the thread to share videos or pictures that prove games are art!
I think you should add a spoiler warning to your opening post, since there's definitely stuff there some of us wouldn't have experienced yet.
As for whether games are art: or media forms are art to varying degrees. And art is about conveying certain emotions and saying something about the world around us.
In reality, I don't think many games do this: they just tell stories, which is fine, but that doesn't make them artistic. And I think it's possible for someone to truly work out eras for this thing, but really I feel it's no different to how one art form informs what comes next.
You know, before we had pop art, which essentially made art understandable and mass available, we had abstract art (probably one of the more difficult ones to truly understand). So art itself can also be, not really art. Warhol's soup can is just as much art as anything from Da Vinci, Van Gogh and Dali. But it's obviously tapping into a different reality than the other artists I mentioned.
Games wouldn't be any different, I feel.