2016 · シナリオ／アドベンチャー／モジュール
Observer Effect
A catastrophic power surge has shut down the Olympian Holobeam Array, a classified research facility built to investigate a fringe theory of physics. Although power and communications have been restored, Delta Green suspects that something unnatural occurred. Players take the roles of Agents sent to inspect the facility under cover of a Department of Energy safety investigation. They investigate the Array, uncover what happened during the outage, and work to contain the consequences of its dangerous experiments.
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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）スキルベース（スキルを購入または獲得）
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。