2023 · ソースブック（プレイを拡張するルール／オプション）

Cyclops

A setting supplement for Hostile and the Cepheus Engine, this game presents a cold, low-oxygen desert world shaped by corporate control, dangerous mining, and rebellion. Radiation from ultraviolet light and extracted ore has caused genetic mutations among the miners, who are rising against the governor’s crackdown. Most settlements lie within a deep asteroid crater containing water, farmland, and breathable air, while miners endure harsher conditions in the surrounding highlands. The supplement includes locations, maps, major characters, supporting NPCs, equipment, and plot ideas for adventures caught between the corporation and the revolt.