2017 · ソースブック（プレイを拡張するルール／オプション）
Prime Directive Modern Edition Supplement
This supplement expands the setting with additional species, factions, and background for the Federation, Klingon Empire, Andromedan Invaders, Inter-Stellar Concordium, Seltorian Tribunal, and other powers. It includes playable and encounter-ready species, new details for constructing adversaries, and story material involving extinct or surviving civilizations. Unified weapons charts collect equipment from the core rulebook and three sourcebooks, while a complete index helps locate rules and gear. Compatible with modern d20 roleplaying systems and requires the Prime Directive PD20 Modern Core Rulebook; the other sourcebooks are recommended for full weapons coverage.
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LudoyaでPrime Directive Modern Edition Supplementを遊ぼう
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。