is a superhero
-themed role-playing game
published by Chaosium
in the 1980s
. Written by Basic Role-Playing
author Steve Perrin, Superworld started life as one third of the Worlds of Wonder product, which also included a generic fantasy setting, "Magicworld", and a generic science fiction
setting, "Spaceworld", all using the same core Basic Role-Playing rules. Only Superworld became a game in its own right.