Fallout Shelter is a business simulation mobile game developed by Bethesda Game Studios and Behaviour Interactive and published by Bethesda. It was later successfully ported to PC, Xbox One, PS4 and Nintendo Switch. The game was first released on iOS on June 14, 2015 and quickly won the love of many players.

In the game, the player will play the role of an overseer of an underground shelter, responsible for managing the resources in the shelter, arranging the work and life of the residents, and ensuring their survival and reproduction. The core resources of the shelter include energy, food and water, which are generated through specific rooms such as power generation rooms, canteens and water treatment stations. Players need to plan and expand these infrastructures reasonably to cope with the increasing number of residents.

Each resident has unique S.P.E.C.I.A.L attributes (strength, perception, endurance, charm, intelligence, agility, luck), which determine their most suitable job positions. Correct personnel allocation can significantly improve work efficiency and reduce resource waste. In addition, the game also features a wealth of emergencies, such as fires and cockroach invasions, and players need to allocate resources reasonably to protect the lives of residents.

In addition to daily management and resource allocation, players can also explore the wasteland to find new resources and equipment. By improving the happiness of residents, they will also have children and bring new hope to the shelter. The game also adds the function of merging buildings, allowing players to merge multiple functional buildings into more luxurious and efficient buildings.

"Fallout Shelter" brings players a challenging and fun doomsday survival experience with its rich game content, unique gameplay and in-depth character simulation.

The core of the game revolves around the underground shelter managed by the player. At the beginning, the player has only a small amount of resources and a few basic rooms, such as the power room, canteen and water treatment station, which are necessary to keep the shelter running. Players need to plan the location of these rooms reasonably to ensure that they can operate efficiently and support each other.

As the game progresses, the population of the shelter will gradually grow, and new residents will join with different S.P.E.C.I.A.L attributes. These attributes determine their most suitable jobs. For example, residents with high strength are suitable for working out in the gym and improving the overall defense of the shelter, while residents with high intelligence are suitable for developing new technologies in the research room. Players need to arrange their jobs according to the attributes of the residents to maximize resource output and the overall efficiency of the shelter.

In addition to internal management, players can also send residents to explore the wasteland to find rare resources and equipment. Various events and monsters will be encountered during the exploration, and players need to formulate strategies based on the abilities and equipment of the residents. After successfully completing the task, not only can you get rewards, but you may also bring back new residents or pets to inject new vitality into the shelter.

In addition, the game also features a variety of emergencies, such as fires, radiation leaks, and cockroach invasions, which will test the player's ability to respond and allocate resources. Players need to make decisions quickly, deploy manpower and resources to respond to crises, and ensure the safety and stability of the shelter.