Yeah this is connecting to a baked-in node that Spritely is running during the jam rating period that hosts the rooms and some bots. If multiple people were online at the same time you'd see them. A localhost server is used to provide the web UI. Everything is rather cryptic at the moment, and there isn't much of a game to be had yet, but it's the very beginnings of a p2p virtual world. Extrapolating a bit, you could imagine hosting your own rooms on your machine that other players can visit in a truly p2p way.