1993 · 资料书（用于增强玩法的规则/选项）
Chessboards: Planes of Possibility
This roleplaying reference provides gamemasters with a flexible system for designing and developing planes, including their types, relationships, growth cycles, and methods of interplanar travel. It offers guidance for using multiple settings in one campaign or connecting several campaigns within an organized multiverse. The book includes five sample metaplanes, along with optional rules for planar energy, artifacts, and interactions between planes and deities. It is designed for use with any roleplaying system.
基于特质/面向（个性影响游戏玩法）骰子（主要为 d10）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Chessboards: Planes of Possibility
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。