The intro establishes the post-apocalyptic setting of Fallout: New Vegas through sound. Western music plays at first, then a gunshot indicates war. Ambient sounds like a lighter create atmosphere. Speaking describes the aftermath of nuclear war and civilizations formed in vaults. It mentions a dam contested in a 3-year war between factions, and an untouched city state run by Mr. House and police robots. The sounds and music use genres and production techniques to set a mood that is initially happy then strange, sinister, and eerie, hinting at violence and an uncertain fate for the protagonist.