2024 · ソースブック（プレイを拡張するルール／オプション）

The Coalfire - A Star System With A Yellow-White Sun

A setting guide for science-fiction adventures in a realistic star system centered on a medium-sized yellow-white G5 star. It describes how the system appears from an Earth-like planet in the habitable zone, including sky and plant colours, visible planets, travel, hazards, opportunities, and other celestial phenomena. The guide also provides options for customizing the system with different planets, galactic environments, and star systems, along with adventure prompts, setting notes, and a glossary of terms.

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