Himu: Interactivity is not something created by games.
Immersion isn't something created by games, but everyone remembers the hallway in Resident Evil where dogs pop out of the fucking windows and every single time when replaying the game, they're wary of that hallway for that same reason even though they know what's going to come.
I think some horror games and adventure games are the few examples of games that could be considered art, because they often evoke an emotional response from the player through that immersion. I'd even go as far as to say that I prefer a horror game to a horror movie. Horror movies don't really do anything for me despite loving them to death. But a good horror game? Oh mama.
When I'm painting, yes, I get immersed. But it's not the same type of immersion as I get when I play Silent Hill 2.
I think that level of immersion can really benefit games in the long run because it's something totally different than what you get from painting or watching a movie since you're the one in control. You can discount it and say "well games aren't the first to do it" but not to this degree, and I think that's worth noting.
Is it an art
form? Not really no. But can some games be considered art? Yeah, I think so.