2010 · ソースブック（プレイを拡張するルール／オプション）
Races of Obsidian Twilight
A post-apocalyptic fantasy setting shaped by a catastrophic meteor impact, where surviving peoples rebuild amid ruined civilizations, volcanic landscapes, and a soot-darkened sky. This sourcebook details the setting’s standard and original playable races, including their personalities, game mechanics, and relationships. It also includes more than 40 new feats, a character sheet, miniature counters, and initiative and monster cards.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）レベル制（XPを獲得してレベルアップ）
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。