2012 · ソースブック（プレイを拡張するルール／オプション）
Grimoire Viperian
This Pathfinder and OGL-compatible supplement presents a serpentine-themed setting element designed to fit into any campaign. It includes new backstory, the Shapeshifter and Pyro base classes, and more than 30 prestige classes for warriors, spellcasters, assassins, monks, druids, and multiclass characters. The book also provides supernatural signs of good and evil, themed Eldritch Path feats, new spells, monsters and templates, and magic items, weapons, and armor. Serpentine creatures, elemental powers, knights, cults, and specialized combat styles expand options for both player characters and game masters.
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。