At Norwescon I got asked whether I thought video games were a narrative art form. I knew the answer -- "no, I do not believe that video games are a narrative art form." But I presented my case off the cuff and wanted to spend some time examining it.
I asserted that an essential quality that makes something a game -- interactivity -- is fundamentally at odds with the act of storytelling. I think that was slightly wrong. What I really mean is, the act of playing a game is fundamentally not a narrative act.