2005 · 资料书（用于增强玩法的规则/选项）
On Language and Research
This d20 fantasy supplement develops the scholarly side of the wizard, focusing on forgotten languages, ancient texts, and the recovery of lost magical knowledge. It provides rules for using multiple magical languages, experimenting with spells and handling disastrous results, and researching spells incrementally. Old tomes, fragmentary scrolls, cryptic diagrams, and books of magical theory become sources of useful knowledge, while culture-based spell lists add variety to arcane traditions.
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 On Language and Research
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。