2003 · ソースブック（プレイを拡張するルール／オプション）
Malleus Monstrorum
A compendium of more than 380 creatures and beings from the Cthulhu Mythos, presented for use with the Call of Cthulhu roleplaying game. Entries cover Outer Gods, Elder Gods, Great Old Ones, avatars, independent races, legendary creatures, animals, and other monsters, with details on their nature and the victims they leave behind. Each creature is illustrated with images styled as historical paintings, statues, reliefs, and other artworks, bringing together forbidden entities and the lore surrounding them.
- プレイ人数
- 0
- 複雑さ
- 3 / 5
属性／ステータス制（STR、CON、PERなど）ランダム属性生成（キャラクター作成時）スキルベース（スキルを購入または獲得）
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。