2003 · ソースブック（プレイを拡張するルール／オプション）
Shadow Games
The fourth book in a six-volume series, this roleplaying supplement advances the Orpheus chronicle toward its coming catastrophe. It includes a timeline and guidance for Storytellers, player-facing materials such as emails and forum entries, new artifacts, and mechanics for channeling Spite into Horrors and creating new Stains. Additional chapters present locations, NPCs, advice for introducing new characters, and missions that launch new plot elements. A prelude and introduction help conclude unresolved storylines from earlier installments.
- プレイ人数
- 0
ダイスプール（目標に対して複数のダイスを振る）属性／ステータス制（STR、CON、PERなど）スキルベース（スキルを購入または獲得）
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。