Legal · Effective June 22, 2026
Terms of Use
Rules for accounts, usernames, avatars, lobbies, matches, fair play, moderation, availability, and future paid features.
Operator and contact
Guandan Online is provided through guandan.online by Oscar Lin, Residency in Germany.
Questions about accounts, data, moderation, or these Terms can be sent to [email protected].
Eligibility
You may use Guandan Online if you are at least 16 years old or have permission from a parent or legal guardian. You may use the service only where doing so is legal for you.
The service is intended for casual online card-game play. It is not offered for gambling, cash prizes, paid tournament entry, or cash-out rewards.
Accounts and stored data
When you create an account, the service stores your email address, username, password authentication data, account settings, and timestamps so you can sign in and use the game.
Your password is processed for authentication and stored as a password hash. Do not reuse a password that you use for important accounts.
The service stores gameplay data, including lobbies, seats, bot seats, match state, moves, passes, round results, leaderboard-relevant data, and technical records needed to run, restore, debug, and protect games.