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In Ground Zeroes, you will only have one chopper, in The Phantom Pain, a lot - Metal Gear Informer
People who have been watching the gameplay videos of Metal Gear Solid V will have an idea of how the chopper is going to be used in the game. In the latest Kojima Productions podcast, some small details on how this element will differ between the two parts were given. You can use the chopper for multiple things (rescuing people, escaping
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