If I can interact and affect what's happening on the screen, it's a video game as far as lazy me is concerned.

As far as picky anal me is concerned, there has to be a goal and a way to lose in order for it to be a video game, hence the "game" part, but that's not going to stop me from calling the other stuff video games too because there's simply no better term out there for them that you can use to where anyone else would know what you're talking about.

Maybe we should create one that applies to all interactive entertainment things but isn't misleading with the "game" part. Video.....exhibits? I don't know.