2014 · キャンペーン設定（ゲーム世界）
GURPS Horror: The Madness Dossier
A horror roleplaying setting about Project SANDMAN, a secret organization defending reality from the remnants of an ancient, inhuman regime. The world’s accepted history is a collective delusion, while mythic creatures and hidden factions seek to restore a forgotten past. Players create elite agents using character templates, martial arts, mental disciplines, specialized technology, implants, and reality-altering artifacts. Campaigns involve investigating concealed truths, resisting mind control, manipulating language and symbols, and confronting human traitors and supernatural enemies.
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）
無料・Web、Android、iOS対応
LudoyaでGURPS Horror: The Madness Dossierを遊ぼう
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。