The "Amnesia Series" is a collection of survival horror video games developed by Frictional Games. The series began with "Amnesia: The Dark Descent," released in 2010, which focuses on psychological horror and exploration. Players navigate through dark environments while solving puzzles and avoiding monsters, all while uncovering the protagonist's lost memories. Subsequent titles include "Amnesia: A Machine for Pigs" and "Amnesia: Rebirth." Each game features unique narratives and gameplay mechanics, but they all emphasize atmosphere, storytelling, and the theme of memory loss. The series has gained a dedicated fanbase and is known for its immersive experience and chilling ambiance.