2006 · ソースブック（プレイを拡張するルール／オプション）
What The...?: The Wanderers Guild Guide to Absurd Monstrosities
This fantasy guidebook presents absurd monstrosities through the reports of members of the Wanderers Guild, a league of explorers, adventurers, artists, and academics. Each entry is written as an in-world account, making the book suitable for use as a prop during play. Relevant entries include d20 game statistics in sidebars. These can be covered to let players read the descriptive text without revealing game information, while game masters retain access to the mechanics.
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）
無料・Web、Android、iOS対応
LudoyaでWhat The...?: The Wanderers Guild Guide to Absurd Monstrositiesを遊ぼう
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。