2015 · ソースブック（プレイを拡張するルール／オプション）
Kaiju Codex (Pathfinder)
This Pathfinder supplement adds 20 massive monsters for Game Masters, ranging from lesser kaiju to a CR 30 creature capable of causing natural-disaster-scale destruction. It expands the existing kaiju rules with new abilities and options for making these creatures more dangerous. The supplement also includes the Iron Knight, a mech-like construct that player characters can crew, an artifact that allows temporary control of a kaiju, and advice for running encounters in the style of Japanese monster films or classical myths.
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。