2002 · ソースブック（プレイを拡張するルール／オプション）
Guildcraft (3.0)
This supplement focuses on guilds as influential forces in fantasy societies, shaping cities, nations, and cultures through commerce, secrets, and political power. It details the privileges and abilities associated with guild membership, along with new setting information for integrating guilds into d20 campaigns. Adventurers of any class can find opportunities for intrigue, knowledge, services, and profit within guildhalls.
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。