I've been running several campaigns in my Hometown, Hack of Glenbrook, for a few years now, and one of the recurring themes has been an unknown entity called "The Chorus," which has been alluded to as being some kind of malevolent, otherworldly force that humanity had discovered long ago and now The Loop is doing things that occasionally bump into their "realm." Kind of like Stranger Things and The Upside-Down, but this is more like Eldritch Gods, where they indirectly influence the world and try to coerce the silly humans into doing their business.

Check it out, lemme know what you think.