The only big issue I had with Fallout Shelter was how often it crashes on older phones. With more people, you'll need more food, power and water, so you have to expand and expand. You can zoom in on a room by double tapping on it, which lets you watch your dwellers chat with each other. It's a shame, because otherwise the dwellers are all really charming.

Women get pregnant instantly, and even the people start to seem like resources in the game. It's much easier to grow your shelter by putting one male and one female dweller alone in a room and letting them grow the population the way nature intended. Once in a blue moon, one might come by from the wasteland, but that's a rare event.

You can't grow your vault without new dwellers. It's a judgment call that will keep players on their toes. If the rush fails, you might end up with a fire or monsters attacking. If you're running out of a resource, you can 'rush' a room. Those working dwellers produce power, food and water, so managing enough of each station is key to surviving.

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