2010 · シナリオ／アドベンチャー／モジュール
Matter Undermined
A standalone high-level fantasy encounter for five 19th- to 21st-level adventurers. An ancient temple has been unearthed, releasing the influence of Ythilus, an elder brain from a destroyed illithid empire. Nearby humanoids become corrupted thralls as the elder brain seeks to regain power. Players descend into the temple, battle its servants, defeat the elder brain, and struggle to maintain their sanity.
ダイス（主にd20）レベル制（XPを獲得してレベルアップ）属性／ステータス制（STR、CON、PERなど）
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。