2021 · 资料书（用于增强玩法的规则/选项）
Under Alien Skies
This sourcebook expands the Trinity Continuum: Aeon setting with information about the Chromatics, Coalition, and Listeners, including their societies and rules for creating characters from these species. It also introduces six additional alien species, including extinct or nearly extinct peoples and the malevolent Doyen. Storyguides receive advice for incorporating aliens into campaigns as encounters, allies, or protagonists, along with instructions for creating new species. The book also details alien technologies, from common devices to mysterious artifacts that remain poorly understood by human researchers.
技能型（购买或获得技能）基于点数（分配点数以获得技能、能力等）基于属性/数值（STR、CON、PER 等）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Under Alien Skies
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。