2011 · 替代规则（核心规则变体）
Basic d20 to Chaosium BRP
A simplified d20 rules set designed for quick character generation and straightforward play in d20-based campaigns. It provides guidance for converting Basic d20 characters for use with Chaosium’s Basic RolePlaying modules and adventures. The rules require familiarity with the d20 system and are not intended for direct use with other systems without conversion.
技能型（购买或获得技能）基于点数（分配点数以获得技能、能力等）基于属性/数值（STR、CON、PER 等）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Basic d20 to Chaosium BRP
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。