2017 · ソースブック（プレイを拡張するルール／オプション）
Under Western Skies: Twilight Trails
This roleplaying game sets paranormal investigations against the backdrop of the American Old West, where cattle drives, shootouts, and posses conceal a secret war over humanity’s fate. Vampires, were-creatures, extraterrestrials, and other incomprehensible beings move through the frontier. Players take the roles of investigators who uncover occult threats and glimpse the larger conflict. The rules include a new Characteristic, additional Skills, guidance for the Referee, an overview of the campaign’s central mystery, and statistics for the major factions involved.
スキルベース（スキルを購入または獲得）ポイント制（ポイントを割り振ってスキルや能力を得る）ダイス（主にd6）
無料・Web、Android、iOS対応
LudoyaでUnder Western Skies: Twilight Trails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。