If you're playing against another user and they have a name that You Do Not Like, here's what you do:

To report an offensive Game Center username on iOS:

  1. Open Settings, scroll down, and tap Game Center.
  2. Tap on Friends to see your friend list and players you've recently played with.
  3. Swipe left on the user's name and tap Report.
  4. Choose the reason, like Inappropriate Nickname, and follow the on-screen steps.

Additionally, here's Apple's official rules for Game Center names:

  • Must be unique: Every Game Center nickname must be unique within the service. If a name is already taken, the user will be prompted to try another.
  • Must be appropriate: Nicknames must follow Apple's Community Guidelines and must not contain vulgar, offensive, or derogatory language.
  • Family Sharing limitations: For child accounts under a certain age (e.g., under 13 in the U.S.), certain features like activity sharing and visible real names are limited.
  • Customizable: Users can create their own nickname or choose from a randomly generated suggestion.