2000 · ソースブック（プレイを拡張するルール／オプション）
Project Rainbow
A conspiracy-horror setting built around the Philadelphia Experiment and the USS Eldridge, which vanished during a 1943 stealth test. It explores the Tillinghast Resonator, the ship’s continuing fate, and the conflict between the Office of Naval Intelligence and Majestic-12. The book includes rules for T-Radiation and N-Space, along with a time-travel scenario and additional material for investigating decades of official lies and advanced military technology.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）ランダム属性生成（キャラクター作成時）
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。