2006 · 资料书（用于增强玩法的规则/选项）
Secret Societies
A roleplaying game supplement about cults, conspiracies, and secret societies. It details six real-world organizations, examining each from fantasy, modern, and futuristic perspectives, with d20 statistics and rules for using them in play. The book also includes six prestige classes, brief profiles of more than 25 additional societies, guidance on incorporating secret organizations into a campaign, and rules for creating original societies.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Secret Societies
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。