2014 · ソースブック（プレイを拡張するルール／オプション）
Derro
This sourcebook expands the subterranean derro as player characters and NPCs for Pathfinder campaigns. It provides racial statistics for lesser and full derro, alternate racial traits, cultural details, quirks, names, and age and weight tables. The book also includes minor madness tables, five racial feats, three archetypes, a derro savant bloodline, new spells, poisoned nets, and strange magical items. The material supports derro-focused adventures in the Underdark or other campaigns with a broad scope.
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。