2009 · 战役设定（游戏世界）
Once Upon A Time: A Guide to Fairy Tales (OGL 3.5)
This roleplaying supplement presents guidance for running adventures inspired by traditional fairy tales and folk stories, where ordinary life meets supernatural danger, treachery, talking animals, and frightening monsters. It covers fairy-tale themes, settings, and story elements for campaigns ranging from Renaissance villages to modern cities. The book includes six advanced classes, new skills, feats, and drawbacks, along with advice on character options, a random encounter chart with four custom NPCs, and fifty random storylines. It is compatible with the Modern d20 rules.
资料书（用于增强玩法的规则/选项）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 Once Upon A Time: A Guide to Fairy Tales (OGL 3.5)
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。