Fallout: New Vegas is an open-world action-RPG for Xbox 360 set in a post-apocalyptic Las Vegas and its surrounding Mojave Desert. Developed by Obsidian Entertainment and released in 2010, it combines first-person shooter elements with role-playing game mechanics. Players explore the wasteland, interact with factions, and make decisions that shape the story. The game features an extensive character customization system, branching dialogue, and tactical combat with a mix of real-time and a pause-able targeting system called V.A.T.S. It's renowned for its deep narrative and player choice.