Actually, a "found footage" horror story revolving around online role playing sessions could be kind of hilarious. Quotes on the poster could be like "this generation's Mazes and Monsters!".
Another good Netflix documentary I watched tonight was the one about the Minutemen: We Jam Econo. I never listened to them, but they've got a super interesting history and story and they interview EVERYONE from the old punker rocking scene, even Milo.