Every player can change their username once, to make sure you can enjoy your game with a handle that you like. This feature unlocks at Town Hall level 5.
To change your name, open the in-game Settings window, then press the "Change name" button and follow the on-screen instructions. D
o not use special characters (like emoji) in your username, because these might not be visible after you confirm the change.
Due to account security reasons, the name change feature is strictly limited to one time only. If your "Change name" button is greyed out, it means the feature has already been used. No further username changes can be made.