2003 · 资料书（用于增强玩法的规则/选项）
Races of the Endless Dark
A guide to the creatures and environments of a thriving underground world, presented through essays and illustrations from an experienced explorer. This d20 monster manual details subterranean beasts and the realms they inhabit, providing material for adventures beneath the surface.
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 Races of the Endless Dark
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。