The Stone of Madness is a hardcore real-time tactics and stealth game set in a Spanish madhouse in the late 18th century. Located in the Pyrenees, a timeworn Jesuit monastery is home both to a madhouse and an inquisitorial prison. Five mysterious characters have been imprisoned between its walls under different pretenses. Plagued by cruel punishment, madness and despair, they will soon devise a plan to escape this place.