2008 · 核心规则（开始对局的最低要求）
The Holmes Companion
A fan-made rules expansion for the 1977 D&D Basic Set extends character progression from levels 4 through 9. It supports continued dungeon-crawling play with rules intended to preserve the focused, gritty feel and mechanics of the original system, without requiring the Advanced Dungeons & Dragons rulebooks.
等级制（获得经验值并升级）职业制（飞行员、巫师、科学家等）基于种族（玩家的种族/物种影响游戏玩法）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 The Holmes Companion
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。