The Setting

Ravenloft is primarily a Gothic horror setting. Dungeon Masters are encouraged to use scenes that build apprehension and fear, culminating in the eventual face-to-face meeting with the nameless evil. Characters have a much greater significance attached to their acts, especially if they are morally impure, as they risk coming under the influence of the Dark Powers (through the game process called "dark powers checks") and gradually transforming themselves into figures of evil.

The magical mists of Ravenloft could appear anywhere in the Dungeons & Dragons universe, drawing evil-doers (or player characters) into the Ravenloft setting.