2007 · 资料书（用于增强玩法的规则/选项）
Cold War
A d20 Modern supplement for running espionage campaigns set during the postwar period. It includes new skills, feats, and equipment, along with historical information adapted for play and guidance for Game Masters on creating Cold War-era missions and campaigns.
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）
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。