Fallout Shelter is a simulation game developed by Bethesda Game Studios, set in the post-apocalyptic world of the Fallout series. Players manage a vault, building rooms and resources to keep their dwellers safe and happy. The game features a variety of characters, each with unique skills, and players must balance their needs for food, water, and power. In addition to managing resources, players can send dwellers into the wasteland to explore and gather supplies. The game includes challenges like raider attacks and disasters, requiring strategic planning to ensure the vault's survival. It is available on multiple platforms, including mobile devices and consoles.