2019 · ソースブック（プレイを拡張するルール／オプション）
Gateway and the Protectorate
This sourcebook explores Gateway Station, a vast ring structure spanning the Earth Belt and housing billions of people, industrial facilities, spaceports, warehouses, and Protectorate headquarters. It details the Protectorate government, its history, key figures, and military power. The book surveys Gateway’s open-sky habitation areas, industrial sectors, automated systems, abandoned lower levels, outer shell, space-traffic control, ports, mining asteroids, and the Protectorate Fleet, expanding the Equinox setting with locations and background information.
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）
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。