Terms of Use

Guandan Online is provided through guandan.online by Oscar Lin, Dublinstraße 25, 81829 München, Deutschland.

Questions about accounts, data, moderation, or these Terms can be sent to contact@guandan.online.

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.

When you create a permanent 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.

Guest sessions are temporary and may expire or be deleted after inactivity. Guest access exists so users can try the service before creating a permanent account.

If a guest upgrades to a permanent account, the same user record may be converted and kept with the current username and related gameplay state where technically possible.

You are responsible for the username and avatar you choose. Do not use names or images that impersonate others, violate rights, contain unlawful content, or disrupt the service.

The operator may remove or change usernames, avatars, or account content if needed for safety, legality, moderation, or service integrity.

You agree not to cheat, exploit bugs, automate play, scrape private data, interfere with lobbies or matches, or use bots except for the built-in bot seats provided by the service.

Game rules, bot behavior, matchmaking, ranking, and leaderboard logic may be changed to protect fair play and service integrity.

Lobbies and matches depend on network connectivity and server state. The service does not guarantee that every lobby, match, action, or replay will always be available, complete, or error-free.

If bugs, disconnects, stale sessions, or inconsistent game state occur, the operator may reset, close, repair, or remove affected lobbies, matches, accounts, or records.

The operator may suspend, restrict, delete, or refuse accounts when reasonably needed to protect users, enforce these Terms, prevent abuse, comply with law, or preserve leaderboard and match integrity.

Users may stop using the service at any time. Account deletion or data requests can be sent to the contact email listed in the Imprint and Privacy Policy.

Guandan Online currently does not sell subscriptions, virtual goods, paid AI analysis, paid tournament entries, prizes, or cash-out rewards.

Before paid features are offered, separate purchase terms will explain prices, billing provider, renewal, cancellation, withdrawal or refund rights, digital content delivery, account bans and paid items, fair-use limits, and any AI-analysis limitations.

Cash tournaments, paid entry, prizes, or revenue shares may trigger gambling, skill-game, consumer, tax, and payment rules. They require separate legal review and tournament-specific rules before launch.

The service software, interface, branding, and original content belong to the operator or its licensors. You may use the service only as provided through the website.

You keep rights you may have in avatars or other content you upload, but you grant the operator the rights needed to host, display, moderate, and process that content for the service.

The service is provided as is and may change, pause, lose connectivity, or become unavailable. No uptime, ranking, game-result, or data-retention guarantee is made.

Nothing in these Terms limits liability where limitation is not allowed by law, including liability for intentional misconduct, gross negligence, injury to life, body, or health, or mandatory consumer rights.

The operator may update the service and these Terms when the product, legal requirements, or business model changes. Material changes will be shown in the service or linked from the website.

The operator may terminate or restrict access as described in these Terms.

These Terms are governed by the laws of Germany, except where mandatory consumer-protection rules of the user's country of residence provide otherwise.