Fallout Shelter is a free to play simulation video game that allows you to live in a virtual city during the apocalypse. It is developed by Bethesda Game Studios and published by Behaviour Interactive. This free-to-play game is highly popular among gamers for its realistic gameplay. It is also quite challenging. You will need to survive the apocalypse and keep yourself alive in order to survive.
To begin the game, you'll need to gather resources. The first resource is the community of residents you have collected. Each of these residents has different skills and attributes that make them better suited for specific tasks. Moreover, you should equip your residents with weapons and armor, since they may end up in combat. If you're building a shelter for a horde of displaced people, you'll need to provide them with water to avoid the icebergs.
To upgrade the vaults, you need to increase the number of dwellers in the vault. To upgrade production rooms, you'll need at least one dweller to work. There are tiers for each room and you can easily switch between them by upgrading them. To improve the production of a room, you can use a radio icon. You can also merge rooms with the same type of rooms, so that you can combine them into a larger one.