2009 · ソースブック（プレイを拡張するルール／オプション）
The Black Libram of Nartarus
A dark fantasy role-playing supplement for the Castle Keeper, presenting wicked spells, magic items, rituals, monsters, deities, and villains. The material is designed to introduce sinister magic and dangerous encounters into a campaign rather than serve as a resource for player characters. The contents originate in the Haunted Highlands setting but can be adapted to other mature-themed fantasy role-playing games with minimal work. Its lore centers on evil forces and forbidden knowledge, making it suitable for campaigns that explore dark and morally challenging themes.
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）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。