2003 · ソースブック（プレイを拡張するルール／オプション）
Machines and Mutants
A creature compendium for a post-apocalyptic world where genetic experiments, artificial intelligence, and abandoned technology have reshaped life after humanity’s decline. It provides descriptions of dozens of mutant, revived, and machine-based species for use as monsters or player characters in d20 games. The book also includes rules for creating new mutations, extinct species, and electronic characters, along with guidelines for designing unusual challenges and investigating technological mysteries. Use requires the d20 Modern Roleplaying Game or the Dungeons & Dragons Player’s Handbook (v.3.5).
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）
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。