2003 · 핵심 규칙 (플레이에 필요한 최소한)

d20 Modern System Reference Document

An open reference document for the d20 Modern roleplaying system, providing rules and game content for contemporary adventure settings. It is organized by topic and supports the creation of compatible third-party supplements and independent roleplaying games. The material was originally distributed as separate files or grouped archives, with licensing documents and introductory guides provided separately.