2003 · ソースブック（プレイを拡張するルール／オプション）
Explorer
This fantasy d20 supplement introduces a new explorer character class for use in campaign settings. The class is built around traveling into unknown regions, overcoming wilderness dangers, and dealing with unfamiliar people and creatures, supported by resourcefulness, bravery, and adaptability. It includes rules for creating and using explorer characters, along with guidance for Games Masters incorporating the class as a player or non-player option.
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。