2009 · 战役设定（游戏世界）
The Extraterrestrials Sourcebook
This roleplaying supplement presents three alien species secretly living among humanity: psychic Greys, shape-shifting Saurians, and technologically advanced Atlanteans. It details their history, culture, biology, psychology, technology, ancient clans, abductions, and influence on Earth. The book includes rules for creating alien characters and hybrids, along with alien weapons, equipment, nanotechnology, and starships. A chronology traces extraterrestrial activity on Earth from 65,000,000 BC to the present. The material is compatible with Conspiracy X 2.0 and other Unisystem games.
资料书（用于增强玩法的规则/选项）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 The Extraterrestrials Sourcebook
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。