A Companion to Superworld

A Companion to Superworld is a supplement in which the game is expanded with new and variant rules, additional superpowers, and details of a superhero headquarters. It also introduces rules for weather and weather-based abilities, along with guidelines for converting Superworld characters to the Champions and Villains and Vigilantes game systems.^[1]

A Companion to Superworld was written by Steve Perrin and published by Chaosium in 1985 as a 72-page book.^[1]