"Amnesia: The Dark Descent" is a survival horror video game developed by Frictional Games. Released in 2010, it immerses players in a first-person experience where they explore a dark and foreboding castle. The protagonist, Daniel, suffers from amnesia and must uncover his past while avoiding terrifying creatures. The game emphasizes psychological horror, using a unique sanity mechanic that affects gameplay. Players must manage Daniel's fear by staying in the light and avoiding darkness. The atmospheric sound design and intricate puzzles enhance the eerie experience, making it a notable title in the horror genre.