2013 · シナリオ／アドベンチャー／モジュール
Abyss of Insanity (True20)
A True20 adventure set in Antarctica, where a collapsed ice shelf exposes a vast geological vent and a mysterious expedition camp. The players investigate the unknown agents, uncover their objective, and face environmental dangers as they descend into the newly revealed ravine. The adventure includes character stand-ups, player handouts, maps at 1/4-inch and 1-inch scales, new psychic powers, and supplemental rules covering equipment, animals, Antarctic hazards, health risks, and the history of Antarctic exploration.
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）レベル制（XPを獲得してレベルアップ）
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。