2011 · ソースブック（プレイを拡張するルール／オプション）
Do: The Book of Letters
A supplement that supplies new letter-based scenarios for a cooperative storytelling game about young travelers who respond to pleas for help. Each entry presents a letter from a different setting, introducing a distinct world, culture, and problem to be resolved. Players read letters as prompts, plan responses, and roleplay pilgrim characters as they travel, investigate, and assist the letter-writers. The book focuses on setup and scene ideas rather than strict mechanics, providing hooks and situation details to inspire episodic adventures.
- プレイ人数
- 0
GM不要（ゲームマスターがいなくてもプレイ可能）記述ベース（ダイスよりもナラティブを重視）珍しいランダマイザー（ダイスやカードを使用しない）
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。