Shannon Appelcline noted that after demons and devils had been removed from AD&D, "Mayfair's new Role Aids line kicked off with Demons. It was followed by over a half-dozen books, most of them demonicmonstermanuals but also including Apocalypse, a campaign-ending adventure by Jonathan Tweet TSR did not allow Mayfair to advertise their new Role Aids books in Dragon magazine but sales were nonetheless strong."