It's hard to put video games into a particular category of art, because they combine so many different forms. Graphic art, music, story, and then of course the interactivity of some performance art pieces. Put them all together correctly and they become a genre all their own. Immersive pieces of media unlike any other. Put them together wrong and despite it being pretty or what-have-you, we tend to refrain from calling it art. All video games are art, but not all video games are deep art.