2003 · 资料书（用于增强玩法的规则/选项）
Ultimate Games Designer's Companion
A supplementary rulebook for d20 games, compiling optional rules and ideas for Games Masters and players. The material covers a range of play styles, including more realistic and lethal combat, as well as cinematic options inspired by Hollywood action. Rules and new content are designed for integration into existing d20 campaigns.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Ultimate Games Designer's Companion
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。