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Terms of Service

Effective July 29, 2026 ยท 28-0: The Grand Slam Challenge

These Terms govern your use of 28-0: The Grand Slam Challenge (the "Game"), operated by an individual developer ("we," "us"). By playing the Game, you agree to these Terms. If you don't agree, please don't use the Game.

Not affiliated with any player or tournament

Unofficial fan project. 28-0 is an independent, unofficial game created for entertainment. It is not affiliated with, endorsed by, or sponsored by any tennis player, the ATP, WTA, ITF, the Australian Open, Roland Garros, Wimbledon, the US Open, or any other organization referenced in the Game. Player names and eras appear for descriptive and entertainment purposes only, and the statistics used are fictionalized approximations for gameplay โ€” not official records.

If a player, rights holder, or organization referenced in the Game has a concern about how they're depicted, contact us at 280grandslam@gmail.com and we will address it promptly, including removing or adjusting the content in question.

The Game

28-0 is a single-player skill-drafting and simulation game. You draft card-based skills, and the outcome of the simulated tournament run is determined by a randomized algorithm โ€” it is a game of chance and drafting strategy, not a prediction, endorsement, or statement of fact about any real athlete's ability.

Accounts and guest play

  • You can play the Game fully as a guest, with no account or personal information required.
  • Signing in with Google is optional, and exists only so you can claim a public username and keep your leaderboard history across devices.
  • You're responsible for keeping your Google account secure. We're not responsible for activity on your account resulting from a compromised Google login.
  • Choose a username that isn't impersonating another person, isn't offensive, and doesn't infringe anyone's rights. We may rename or remove a username that violates this.

Leaderboard integrity

Every leaderboard run is independently re-simulated on our server from a server-issued random seed before it's recorded โ€” the game client cannot report its own score. Attempting to bypass, reverse-engineer, or manipulate this verification, or otherwise cheat the leaderboard, is a violation of these Terms. We may remove leaderboard entries or suspend accounts involved in such activity, without notice.

Acceptable use

You agree not to:

  • use the Game for any unlawful purpose;
  • attack, overload, scrape, or attempt unauthorized access to our servers or backend services;
  • impersonate another person or misrepresent your affiliation with anyone;
  • interfere with other players' use of the leaderboard.

Advertising

The Game is free and may display advertising, including optional rewarded video ads, to support that. Ads are provided by third-party ad networks once integrated, and their content is not endorsed by us.

Intellectual property

The Game's code, design, and original content belong to us, except for third-party or open-source components used within it. You may not copy, resell, or redistribute the Game itself. Nothing here grants you rights to any real player's name, likeness, or statistics beyond your personal, non-commercial use of the Game as intended.

No warranty

The Game is provided "as is" and "as available," without warranties of any kind, whether express or implied. We don't guarantee the Game will be uninterrupted, error-free, or that simulated results will be free of bugs. Use it at your own enjoyment and risk.

Limitation of liability

To the maximum extent permitted by law, we are not liable for any indirect, incidental, or consequential damages arising from your use of the Game. Since the Game is free, our total liability to you for any claim is limited to the amount you paid us to use it โ€” which is zero.

Changes and termination

We may update the Game or these Terms at any time; continuing to play after a change means you accept the update. We may suspend or terminate access for anyone who violates these Terms.

Governing law

These Terms are governed by the laws applicable to us as the operator, without regard to conflict-of-law principles, and without prejudice to any mandatory consumer-protection rights you may have under the law of the country where you live.

Contact

Questions about these Terms: 280grandslam@gmail.com