2006 · 资料书（用于增强玩法的规则/选项）
Edition Pi: Core Spells
A core spell reference for a d20 fantasy roleplaying system, presenting the spell rules and foundational magical content used in play. It forms part of an open-community rules project that revises and combines selected elements from the 3.0 and 3.5 editions, with additional changes and new material.
等级制（获得经验值并升级）基于属性/数值（STR、CON、PER 等）技能型（购买或获得技能）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Edition Pi: Core Spells
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。