In Fallout Shelter, you take control of your very own iconic Vault from Vault-Tec, where you'll be responsible for keeping your Dwellers happy and protecting them from dangers from the outside world, called the Wasteland. You will undoubtedly put a ton of time and effort into designing the layout of your Vault, gaining new Vault Dwellers, and ensuring they have enough resources to survive.

It is only natural, then, that you are wondering if Fallout Shelter runs when your device is closed and if you need to worry about anything happening to your Vault while you are away for short or long periods. Here is the answer to that question — and much more.

Featured - Fallout Shelter Mistakes To Avoid
Fallout Shelter: 24 Mistakes All Players Make That Ruin Their Experience

Fallout Shelter can be a punishing game. Here's a look at some mistakes that players make which can ruin their experience.

1

Does Fallout Shelter Pause When You Exit?

Living quarters in Fallout Shelter
Fallout Shelter in-game screenshot.

Yes, Fallout Shelter does run when closed — kind of. What the game really does is calculate the time you were away and then catch up on specific aspects of the game when you relaunch it and open your Vault, making it seem like it is running in the background.

During the game's offline calculation, you'll observe progress in your Vault in various ways. Your Vault Dwellers will continue exploring the wasteland while encountering events, crafting items, or training a SPECIAL. As your Vault continues to 'run' in your absence, it's essential to maintain a stockpile of resources. This proactive approach will prevent you from returning to unpleasant surprises and ensure the stability of your Vault.

Ensuring your vault has enough resources is super important because your resources will continue to drop for four minutes during the offline calculation, and the production of your rooms stops after four minutes. To get around this, you can have a Mr. Handy or Snip Snip collect resources in your rooms while you are away. When your Snip Snip gathers your resources while you are offline, it is a great way to complete tasks like 'collect x amount in a minute' since the timer stops, but the generated product is still collected.

Luckily, random incidents and vault attacks no longer happen when the game is closed like it used to. Nothing was worse than logging into the game to find molerats, a fire, or ghouls that had killed all your Vault inhabitants. Still, specific circumstances could still happen, especially for those who play on mobile devices.

Save & Exit Fallout 76
Using the save and exit button in the settings menu of Fallout Shelter.

For mobile and tablet players, make sure you go to your device's home screen or force the app to close. When you do so, the game will adhere to the four-minute rule before pausing resource drop and production gains. However, if you close your tablet cover or leave the app running in the background, there is a chance it could continue playing as if you were there, which would be disastrous. When this happens, your vault dwellers could die, especially if your resources are in the red or your vault dwellers are already close to death since they can and will die when you are away.

However, regardless of the platform you play on, you should always use the Save and Exit button in the Settings menu when exiting Fallout Shelter, whenever possible. This will close out your Vault and ensure there are no unexpected issues with how the game handles being offline.

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Fallout Shelter Tag Page Cover Art
Fallout Shelter
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Released
June 14, 2015
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WHERE TO PLAY

DIGITAL
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Developer(s)
Bethesda Game Studios, Behaviour Interactive
Publisher(s)
Bethesda Softworks
Franchise
Fallout
Platform(s)
Android, iOS, PC, PS4, Switch, Xbox One
Genre(s)
Simulation