2001 · ソースブック（プレイを拡張するルール／オプション）
Brave New Planes
This supplement provides variant planes for customizing a fantasy campaign’s cosmology. It covers Material Planes, Outer Planes, Inner Planes, Demiplanes, and Transitive Planes, describing their roles as campaign worlds, divine realms, elemental sources, limited magical domains, and routes between other planes. The material can be used alongside or instead of the core planes, allowing each campaign to establish its own planar structure. It also includes the World Serpent Inn as an optional Transitive Plane.
- 複雑さ
- 3 / 5
属性／ステータス制（STR、CON、PERなど）ダイス（主にd20）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。