2007 · 资料书（用于增强玩法的规则/选项）
GM Gems Volume 1: A Collection of Game Master Inspiration
A 64-page collection of system-neutral tools and ideas for Game Masters, with occasional references to d20 terminology, spells, items, and statistics. It provides material for alchemical mishaps, memorable empty rooms, unusual campsites, familiar creatures with unexpected variations, brief encounters, distinctive taverns and inns, unusual holidays, and 100 unique treasures. The entries are intended to support preparation and improvisation across a range of role-playing games.
免费，支持网页、Android 和 iOS
用 Ludoya 玩 GM Gems Volume 1: A Collection of Game Master Inspiration
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。