2004 · 资料书（用于增强玩法的规则/选项）
The Book of Familiars: Monstrous Familiars
A d20 3.0 supplement focused exclusively on monstrous familiars. It presents rules and options for incorporating these unusual creatures into a character’s familiar choices, with refinements and additions to the material found in the broader Book of Familiars.
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 The Book of Familiars: Monstrous Familiars
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。