How to delete a Runescape account?
The description of the service:
RuneScape is a fantasy MMORPG can be used as a graphical browser game implemented on the client-side in Java, and incorporates 3D rendering. Since the release of the NXT client in April 2016, a non-browser based version of the game that is written in C++ is also available.
Under 5. Account Settings > A. Account Management > V. Account Deletion. You must mail or fax an affidavit to the Runescape office along with a copy of your legal identification