2004 · 资料书（用于增强玩法的规则/选项）
First Book of Things
A collection of new creatures, technological items, and spells for the Call of Cthulhu role-playing game. The creatures include both Mythos entities and other horrific foes, giving Keepers additional threats beyond investigators’ existing knowledge. Strange technological items are associated with several of these beings, while the included spells focus largely on summoning, binding, and creating new horrors, and are most often used by opposing forces.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）随机属性生成（在角色创建时）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 First Book of Things
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。