"Curse of Strahd" is a Dungeons & Dragons (D&D) adventure module that was first published by Wizards of the Coast in 2016. It is the fifth edition of the game and is set in the horror-themed campaign setting of Ravenloft. The module is a reimagining of the classic 1983 adventure "Ravenloft" by Tracy and Laura Hickman.

The storyline revolves around the dark and menacing figure known as Strahd von Zarovich, a vampire lord ruling over the gothic land of Barovia. Strahd is a powerful and tragic figure with a dark past, and his influence permeates the entire realm. The characters are drawn into Barovia and find themselves trapped within its borders, surrounded by mists that prevent escape.

Players take on the roles of adventurers who must navigate the haunted and cursed landscape of Barovia, encountering various horrors, mysteries, and challenges. The campaign is designed to be atmospheric and filled with gothic horror elements, incorporating themes such as undead, werewolves, witches, and other supernatural entities. The central goal for the characters is to confront and ultimately defeat Strahd, but the journey is fraught with peril and moral ambiguity.

"Curse of Strahd" is known for its open-world structure, allowing players to explore the different areas of Barovia in a non-linear fashion. The campaign offers a rich narrative, with intricate character backgrounds, complex relationships, and a haunting atmosphere that contributes to the overall sense of dread.