2005 · ソースブック（プレイを拡張するルール／オプション）
Monster Geographica: Marsh & Aquatic
This reference compiles 200 monsters associated with wetlands and aquatic environments, drawn from more than 20 sources and including over 80 classic 3.0 creatures updated for a 3.5 game. Creatures are organized by challenge rating to support random encounters, adventure building, and campaign design. An alphabetical table of contents also lists creatures by type and subtype, with entries arranged by challenge rating for quick reference.
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）
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LudoyaでMonster Geographica: Marsh & Aquaticを遊ぼう
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。