2005 · ソースブック（プレイを拡張するルール／オプション）
BESM d20 Monstrous Manual
A fantasy creature reference for d20 and anime-inspired roleplaying campaigns, covering more than 100 major monster races. Each entry breaks down a creature’s abilities and power level using a point-based system, and includes combat tactics that outline its instincts and methods. The material can also be used in other fantasy settings as a toolkit for game masters and players.
ダイス（主にd20）
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。