2017 · 替代规则（核心规则变体）
A World Full of Nightmares
A print supplement for playing The Nightmares Underneath with rules based on Powered by the Apocalypse. It expands the game for use with that system and is not a standalone game. The PDF version is included with The Nightmares Underneath.
资料书（用于增强玩法的规则/选项）骰子（主要为 d6）基于属性/数值（STR、CON、PER 等）基于描述（更偏叙事而非骰子）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 A World Full of Nightmares
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。