Try these: iExplorer: http://iosgods.com/topic/9760-iexplorer-v3760-crack-ios-83-ios-84-compatibility/ iTools portable: http://iosgods.com/topic/9157-itools-v1849-support-ios-83-84/ AnyTrans: http://iosgods.com/topic/3935-anytrans-v4-better-than-itools-and-ifunbox/ iMazing: http://iosgods.com/topic/6008-imazing-formely-know-as-diskaid-file-manager/
iFunBox: http://dl.i-funbox.com If you're on iOS 8.3, 8.4 or above, you cannot access the app's files & folders.
You can apply save game hacks using this method though which also lets you access app files and modify them: http://iosgods.com/topic/9651-how-to-installapply-hacks-posted-in-this-section-if-youre-on-ios-83-84/