2019 · ソースブック（プレイを拡張するルール／オプション）
Rifts Bestiary Volume One
This bestiary presents more than 80 creatures from Rifts North America, including predators, riding animals, giant insects, alien horrors, pets, companions, and dangerous monsters. Each entry includes detailed descriptions, basic S.D.C. statistics, habitat information, and a map showing where the creature is found. Adult, juvenile, and young life stages provide different levels of power and danger. The creatures can serve as allies, mounts, attack animals, or encounters and adventure catalysts, with material adaptable to other Palladium settings.
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。