Challengers is a role-playing game published by Ragnarok Enterprises in 1985.
Challengers: Unique Superhero Adventuring is a superhero role-playing system based on a simplified version of the To Challenge Tomorrow rules.[1] There are two books: one consisting of character and combat rules; the second describing a world where superheroes exist, important governmental organizations, sample characters, and six scenario suggestions.[1]
Challengers was designed by David Nalle, and published by Ragnarok Enterprises in 1985 as a digest-sized box including a 40-page book and a 20-page book.[1]
. Lawrence Schick. Heroic Worlds: A History and Guide to Role-Playing Games. Prometheus Books . 1991. 0-87975-653-5 . 39.