2009 · ソースブック（プレイを拡張するルール／オプション）

Monsters & Treasure of the Wilderlands I

This 32-page supplement adds 27 new monsters for use with Castles & Crusades and the Wilderlands of High Adventure, ranging from minor faeries and vermin to powerful extraplanar beings and fallen demigods. Each entry includes ecology, society, abilities, and treasure, with maps showing common locations throughout the Wilderlands and beyond. The creatures can also be adapted to other fantasy campaign settings. Sixteen new treasures provide additional magic items and campaign details, from minor curiosities to potent relics. Their histories are tied to the Wilderlands but can be altered for use in other settings.