Delete your account

This page explains how to delete your Zung Jung Mahjong account and exactly what is removed and what is kept.

How to ask

1. Email zungjung.mahjong@gmail.com with the subject “Delete my account”.
2. Send it from the Google account you use to sign in. If you cannot, include your in-game display name so the account can be found.
3. We confirm the request and complete the deletion within 30 days.

The game is a free, non-commercial hobby project. There is no in-app purchase and no paid account to cancel.

What is deleted

• Your account and the link to your Google sign-in.
• Your email address and your sign-in sessions.
• Your notification settings and your personal notices.
• Your display name, public tag and leaderboard entry.

What is kept

Games are shared records of four players' actions. Deleting one account must not erase another player's history, so some game records stay:

• Matches and Shadow Ranked challenges you played with other people stay in their history. Your name is shown as “not specified”.
• An internal account id, the recorded game moves and the Elo rating at the time of each game stay for model training and for the integrity of the rating history. They are not linked to your name, email, Google account or public profile.
• Your rating history stays stored internally but is hidden from the public rating-history view.
• Backups may contain the account for up to 30 days. Deletions are re-applied automatically after any restore, before the service is made available again.

Questions

Write to zungjung.mahjong@gmail.com. The privacy policy describes the rest of the data the game keeps and why.