@saosmash That's exactly the word I stole from here to use to talk to normals.
I would say no to it being video game because of the collaborative nature of the story and plot. I keep thinking of a story heavy, lo-ish fi video game like Fallout 1. And I think, how would the experience change if another person was on the other end of that NPC. A person with a countless ideas on how the conversation should go and you have no direct control over it.
Because, no matter the system, when you are in a scene, the other play can type back anything. You think you are chatting about pets over coffee when suddenly BOOM. They have blown your head off. To further my point, you don't get to step aside after making a bad choice in a video game and save to the NPC, "Hey, you know what...I shouldn't have said that. Let me try again?"
So. No. It's improv, to use a more common term.
EDIT: @Apos There is a video game out now, A Blind Legend that is aimed at the visually impaired. They are taking advance of high quality 3D audio. So, while it's just one game, there is innovation happening.