All of your Game Center data is stored in iCloud. This means that in order to delete your progress you must go to iCloud storage settings. It should only take a few minutes:

  • Go to Settings > Apple ID Profile > iCloud
  • Tap Manage Storage
  • Look for the game you want to restart and tap it
  • Select Delete Data – remember this action deletes all data for this game from all Apple ID connected devices
    • A message pops-up asking you to confirm the deletion

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