The first edition was written by Joe F. Martin and published by RPG, Inc. in 1982 as a 44-page book. A 44-page digest-sized second edition packaged with a referee's screen was published in 1983 by RPG, Inc. This edition introduced the idea of easily created and disposable characters. Like "Dungeons and Dragons", the Mission Director (the referee or Game Master) used a Random Encounters table to generate terrain and villages, create groups of adversaries for the players to fight, obstacles to overcome, or problems to solve. Combat was resolved using miniatures rules.