2020 · ソースブック（プレイを拡張するルール／オプション）
The Radiant Imperium
A science-fantasy setting guide for the Xa-Osoro System, an empire-spanning region recovering from near-annihilation during the mysterious Nova Age. It details the culture, history, government, and militaristic society of the Radiant Imperium, whose citizens remain wary of a return to authoritarian rule. The guide also presents influential factions, including the Prax Administration and the Host of the Repentant, providing background and setting material for player characters exploring a system divided among rival governments, corporations, and other power groups.
属性／ステータス制（STR、CON、PERなど）ポイント制（ポイントを割り振ってスキルや能力を得る）ダイス（主にd20）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。