I've been playing a lot of games lately.  I mostly play on PS4.  Do you play video games much?
Actually, I never played a video game.  Are they an art form or just a play form?
A little of both.  It depends on the game.  Some are certainly just to play, while some try to elevate to an art form.
I heard as early as the 1980s art museums began displaying first and second generation games as an art form. Maybe like comic books?
That's a definite possibility.  The history of video games is certainly important enough to be in museums, and you can make as good of an argument for them as art as you can for most paintings.
Well, they have been afforded legal protection as creative works by the U.S. Supreme Court. I guess that says something about the ingenuity used to create them.
For sure.  There's a lot that goes into making a video game, from moment one.  You have people working hard to come up with stories, artwork for them, game systems, all sorts of things.  It's no different from a movie.
Good comparison. My husband is a film director and he often expresses interest in the visuals and screen dynamics of video games.  
A well made game is exactly the same as a movie in that regard.  You have to have an understanding of the same kinds of film techniques to make a compelling story in a game, with the added trouble of making it fun to interact with.
Indeed. I heard there is a game based upon the 1972 film "The Godfather" that builds upon the Godfather films.
There is a Godfather game, though I've never played it so I don't know how much is expands on the movies.  Though, that is something I like about what games can let you do, continue stories like that.