1998 · ソースブック（プレイを拡張するルール／オプション）
The Mythic Seas
This sourcebook expands Mythic Europe into the oceans and seas, detailing the ships that travel them and providing rules for their creation, maintenance, and use in combat. It explores maritime myths and legends, offers scenarios and sagas for magi, and includes rules for trading cargo in distant ports. The book also presents mundane and magical sea creatures, new spells, new books, and new character archetypes, with woodcut illustrations drawn from medieval life.
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）ダイス（主にd10）
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。