2009 · 资料书（用于增强玩法的规则/选项）
B/X Companion
This companion volume expands the 1980 edition of Basic and Expert fantasy roleplaying rules for characters of levels 15–36. It includes over 70 monsters, more than 100 magic items, a new category of magical items, 58 spells, and spell tables reaching 7th level for clerics and 9th level for magic-users. Additional rules cover high-level character abilities, the creation and management of dominions, army command, mass combat, hazardous environments, and adventures on other planes.
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 B/X Companion
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。