2016 · ソースブック（プレイを拡張するルール／オプション）
Seafarer's Supplement
This Dungeons & Dragons 5th Edition supplement expands aquatic adventures with four aquatic beasts, four playable aquatic races, eight subclass options, and a prestige class. It includes statistics for dolphins, giant sea turtles, stingrays, and electric eels, along with merfolk, sahuagin, bullywug, and kuo-toa player characters. New character options include aquatic-themed barbarian, bard, cleric, fighter, monk, paladin, sorcerer, and wizard subclasses. A Beast Master prestige class provides characters from other classes with a tougher, more capable animal companion.
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d20）
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。