2002 · 替代规则（核心规则变体）
Campaign Sourcebook (d20 3.0)
A fantasy campaign setting for the d20 system, based on the world of the Sovereign Stone novels. It introduces new player races, classes, feats, skills, monsters, and a magic system in which characters build points toward spells, making complex effects more difficult to cast. Players can explore a world of Orks, Elves, Humans, and Dwarves, each with distinct cultures and elemental affinities, while Dominion Lords oppose the undead knights of the Void. The setting also includes the mysterious Taan, wielders of Void magic who seek to conquer the other peoples.
战役设定（游戏世界）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 Campaign Sourcebook (d20 3.0)
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。