2004 · ソースブック（プレイを拡張するルール／オプション）
Book of Adventuring
A practical guide for d20 fantasy role-playing, covering the skills and decisions adventurers need to survive dangerous situations. It explains how equipment can be used, how characters contribute to a party, and which tactics help when resources are limited or plans go wrong. Chapters address a wide range of environments and challenges, including wilderness travel, underground exploration, city streets, and extraplanar journeys. Advice also covers basic survival concerns such as finding food and managing hazards, making it suitable for newer players and groups seeking guidance on the craft of adventuring.
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。