"Fallout Shelter" is a simulation game for Microsoft Windows, iOS, Android, Xbox One, PlayStation 4 and Nintendo Switch. The player acts as the Overseer, building and managing their Vault and its dwellers, sending them into the Wasteland on scouting missions and defending the Vault from attacks. Unlike the main entries in the franchise, this game has no ending and mostly revolves around attempting to keep the people who live in the vault, an intricate fallout shelter, alive. The game uses microtransactions, a form of in game purchases, that take the form of nuka-cola quantum, the game's "premium" currency, lunch boxes, an item that would give a random mixture of in-game items, pet carriers, something that would contain a pet, which can boost a single dweller's stats, and "mister handys", a robot who could harvest the games materials or be assigned to outside the vault to harvest bottle caps, the games currency. "Fallout Shelter" was released for iOS on June 14, 2015, Android on August 13, 2015, and for PC on July 15, 2016. On February 7, 2017, Bethesda launched "Fallout Shelter" on Xbox One. On June 10, 2018, Bethesda announced and launched "Fallout Shelter" on Nintendo Switch and PlayStation 4.