"Grand Theft Auto IV: The Lost and Damned" is an expansion for the popular video game Grand Theft Auto IV. Released in 2009, it follows the story of Johnny Klebitz, a member of the Lost Motorcycle Club, as he navigates the criminal underworld of Liberty City. The game features new missions, characters, and vehicles, enhancing the original gameplay experience. The expansion introduces a darker narrative, focusing on themes of loyalty and betrayal within the motorcycle gang. Players can explore the open world, engage in various activities, and experience a different perspective on the events of Grand Theft Auto IV. The game received positive reviews for its storytelling and gameplay improvements.