2023 · ゲーム以外の書籍（ただしRPG関連）
The Secret Art of Game Mastery
A 250-page reference guide for running tabletop role-playing games, drawing on more than a century of accumulated game-mastering experience. It covers preparation, session notes, and practical techniques applicable to any system or genre, with guidance for both new and experienced game masters.
無料・Web、Android、iOS対応
LudoyaでThe Secret Art of Game Mastery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。