Editing The World of Aarn (section)

===Demons===
Demons are the clerks of the afterlife, who created the nine and a half hells after the previous afterlife system was destroyed. They have knowledge of Earth, no access to magic, and follow earth religions. Their highly advanced technology is also based on earth science fiction stories, but all of their devices are designed with a retro North American 1930s to 1950s vibe.

Because of demon influence, technologies on Aarn that involve electronics, magnetism or chemical reactions are considered "demon technology" and mistrusted to the point of paranoia and superstition.