2002 · 资料书（用于增强玩法的规则/选项）
Aliens & Deviltry
This roleplaying supplement presents two sourcebooks for a science-fiction setting shaped by ancient alien technology, religious conflict, and supernatural forces. It details the peaceful, philosophical Ur-Obun and the warlike Ur-Ukar, including their histories, cultures, psychic abilities, and theurgic powers. It also explores the mysteries and dangers of the Known Worlds, from forgotten Anunnaki devices and strange entities to psychic covens, Sathraists, demon cultists, war golems, and ghosts. The book includes d20 System rules and new powers for these races, factions, and beings.
等级制（获得经验值并升级）基于属性/数值（STR、CON、PER 等）技能型（购买或获得技能）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Aliens & Deviltry
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。