How to delete game app data from iCloud , How to erase game information iPhone iPad iPod

How to completely delete game data iPhone 5S iPhone 5c iPhone 5 iphone 4S iphone 4 iPhone 3GS iPad1 iPad 2 iPad 3 iPad 4 iPad retina display iPad mini iPad retina display mini ipod touch iPhone 6 iPhone 6plus
iOS 7
7.1.1

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