2011 · 资料书（用于增强玩法的规则/选项）
The Devious Book of Fumbles & Crits
A supplement for 4E fantasy roleplaying that expands the effects of critical successes and fumbles. It provides tables for magic-using characters, melee and ranged characters, and monsters, along with optional balancing tools and quick fumbles. The book also adds new creatures, treasures and item sets, hazards, terrain powers, diseases, potions, and poisons for use in encounters.
骰子（主要为 d20）等级制（获得经验值并升级）基于属性/数值（STR、CON、PER 等）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 The Devious Book of Fumbles & Crits
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。