Apple's iOS and iPadOS 13 support multiple PS4 or Xbox One controllers, which could be huge for Arcade

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Xbox and PlayStation Game Controllers with Apple Arcade: The FAQ - TidBITS

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How to connect a PS4 controller to your iPhone, iPad or Android phone

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Apple will Support Xbox One and PS4 Controllers - MyGiftCardSupply

How to pair Xbox and PlayStation controller with iPad, Mac and Apple TV

Apple will Support Xbox One and PS4 Controllers - MyGiftCardSupply