A big part of playing videogames is doing so collaboratively. We like to talk about and share our experiences. Before now, arcades were the place to go for this, where you could gather around arcade cabinets, watching your peers smashing high-scores and giving commentary as you wait for your chance to play. But now it’s mostly online, with livestreaming services letting thousands of people gather around a single game-playing session, all shouting into the chat. Seizing on this kind of behavior—albeit hoping to foster more thoughtful discussion—and coming hot on the heels of film festivals like Cannes, Sundance, and Toronto, is…