1988 · كتاب مصدر (قواعد/خيارات لتعزيز اللعب)

Agent 13 Sourcebook

A roleplaying sourcebook for Top Secret/S.I. set against the pulp-adventure world of the 1930s. It presents a campaign involving the Brotherhood, a conspiracy seeking to bring the world under its control, along with villains, heroes, espionage, and daring escapes. Additional material supports adventures featuring G-Men pursuing gangsters, masked crimefighters, explorers seeking lost civilizations, and private investigators taking dangerous cases. The sourcebook provides background and scenarios for expanding play across several 1930s adventure genres.