Terms of Service

Effective September 29, 2026. LobbyLab is operated by CardGrader LLC.

In short

You must be 13 or older to use LobbyLab, and under 18 you need a parent's permission. You own your prompts, and you let us host, run and show the games you publish; games are public by default. We have zero tolerance for objectionable content and abusive users. Credits and plans are sold through the App Store and Google Play; failed builds give credits back, and your games are never deleted for not paying. Disputes go to individual arbitration under Florida law unless you opt out within 30 days.

1. Who we are and what these terms cover

LobbyLab lets you make multiplayer games by describing them in plain words, and play them with friends on the web and in the LobbyLab apps. LobbyLab is operated by CardGrader LLC ("CardGrader LLC", "we", "us" or "our").

These Terms of Service ("Terms") are a binding agreement between you and CardGrader LLC. They cover the LobbyLab website at lobbylab.gg, the LobbyLab apps for iOS and Android, the games people make and play on LobbyLab, the LobbyLab Multiplayer API and developer tools, and every other LobbyLab product or feature that links to these Terms (together, the "Service").

These documents are part of these Terms:

By creating an account, joining a game, building a game or otherwise using the Service, you agree to these Terms. If you do not agree, do not use the Service.

2. Who can use LobbyLab

3. Your account

4. The Service

5. Your content and your games

What counts as your content. "Your Content" means what you give the Service: the descriptions and instructions you type to build or change a game ("prompts"), game titles and descriptions, your name and handle, reports, feedback and support messages. "Your Games" means the games the Service builds from your prompts, including every version and change.

What you own.

The license you give us. So we can run LobbyLab, you give CardGrader LLC a worldwide, non-exclusive, royalty-free, transferable license, with the right to sublicense to our service providers and to other players as needed to operate the Service, to host, store, copy, run, reproduce, display, perform, distribute, adapt and create derivative works of Your Content and Your Games in order to:

This license lasts while Your Content is on the Service, and for a reasonable time afterwards to remove it from backups and caches. It continues for public games you choose to keep playable when you delete your account (they stay without your name, as the deletion screen explains), and for promotional material we made before you removed a game.

Games are public by default. When one of your games is published, it is public by default. Anyone can find it on LobbyLab, open its page, play it, share it and rate it, and your handle may be shown as its creator. Where the app offers it, you can change who can see a game. New games are checked before they are listed publicly, and a game with an age rating above a player's age is not shown to that player.

Your responsibilities. You are responsible for Your Content. You promise that you have the rights needed to submit it and to give us the license above, and that it follows these Terms and the Community Guidelines. Do not put personal information about yourself or anyone else in a prompt or a game.

How we use content to run and improve LobbyLab. We use prompts, games, build records and feedback to operate, maintain, secure and improve the Service, for example to fix failed builds, improve our builder instructions, examples and safety checks, and understand which features people use. We do not sell Your Content. Our Privacy Policy explains which service providers process it.

Feedback. If you send us ideas or suggestions, we may use them without any obligation to you.

6. AI-generated games and other output

7. Rules for using LobbyLab

LobbyLab has zero tolerance for objectionable content and abusive users. Content that breaks these rules is removed, and people who post it or abuse others lose access to the Service. The Community Guidelines explain the rules in detail. In short, you must not use the Service to create, share or do any of the following:

You also must not:

Games can include fictional violence, horror, competition and friendly trash talk as part of play. Those themes are welcome and only affect a game's age rating, as the Community Guidelines explain.

8. Moderation, reports and enforcement

How we moderate. We use a mix of automated checks and people:

We are not required to review everything before it appears on the Service, but we may review, rate, restrict or remove any content, and we may investigate any use of the Service, at any time.

Reports and blocking. You can report a game or a player where the app offers it, or through the Help and support page. We aim to act on reports within 24 hours, and faster for the most serious ones. You can block another player at any time; the Community Guidelines explain what blocking does.

What we may do. Depending on what happened, we may: change a game's age rating; ask for changes; hide or remove a game, a name or other content; reset a name or handle; limit features such as building, publishing, friend requests or invites; record a strike; suspend or permanently ban an account and the people behind it; remove credits obtained through abuse or fraud; and report conduct to law enforcement or the National Center for Missing and Exploited Children. For serious violations, such as anything that sexualizes minors, threats, or scams, we act immediately and without warning.

Appeals. If you think we made a mistake, write to us through the Help and support page within 30 days of the decision. A person on our team will review it and tell you the outcome.

9. Credits

10. Plans, purchases, renewals and refunds

11. Playing with others

12. Notifications and messages from us

13. Other companies' services

The Service works with services from other companies, such as Sign in with Apple, Google sign-in, the App Store and Google Play. Your use of those services is governed by their own terms and privacy policies. The Service may link to other websites that we do not control, and we are not responsible for them.

14. Intellectual property

15. Multiplayer API and developer tools

The LobbyLab Multiplayer API, its software development kits (such as the LobbyLab client and server libraries), the LobbyLab command line tool, the MCP server and the developer documentation (together, the "Developer Tools") let developers add LobbyLab rooms, invite codes, matchmaking and shared game state to games they host themselves. The Developer Tools are in a private alpha and are open by invitation. If you use them, this section applies in addition to the rest of these Terms:

16. Ending your use of LobbyLab

17. Disclaimers

The Service, the games on it, and all AI output are provided "as is" and "as available". To the fullest extent the law allows, CardGrader LLC disclaims all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, title, non-infringement, accuracy and quiet enjoyment, and any warranty that the Service will be uninterrupted, secure or free of errors, that builds will succeed, or that content will be available.

Some places do not allow some of these disclaimers, so some may not apply to you. Nothing in these Terms limits rights you have under the law that cannot be limited by contract.

18. Limitation of liability

To the fullest extent the law allows, CardGrader LLC and its owners, employees, contractors and service providers will not be liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for any loss of profits, revenue, data, goodwill or other intangible losses, arising out of or relating to the Service or these Terms, even if we were told they were possible.

To the fullest extent the law allows, our total liability for all claims arising out of or relating to the Service or these Terms is limited to the greater of (a) the amount you paid for the Service in the 12 months before the event that gave rise to the claim, or (b) US$100.

These limits apply whatever the legal theory, and even if a remedy fails of its essential purpose. They do not limit liability that the law does not allow to be limited, such as liability for fraud, or for death or personal injury caused by our negligence where that applies.

19. Indemnity

If you use the Service for anything other than personal use, including through the Developer Tools, or where the law otherwise allows it, you will defend, indemnify and hold harmless CardGrader LLC and its owners, employees and contractors from claims, losses, liabilities and costs (including reasonable legal fees) arising from Your Content, your games, your use of the Service, or your breach of these Terms or the law. We will tell you about the claim and may take part in the defense with our own counsel.

20. Governing law

These Terms are governed by the laws of the State of Florida, United States, without regard to conflict of law rules, and by the Federal Arbitration Act for section 21. For any claim that is not subject to arbitration, you and CardGrader LLC agree to the exclusive jurisdiction of the state and federal courts located in Florida.

If you live in the European Economic Area, the United Kingdom or Switzerland, you also keep the protection of the mandatory consumer laws of the country where you live, and you may bring a claim in the courts of that country.

21. Dispute resolution and binding arbitration

Please read this section carefully. It affects your rights.

Talk to us first. Most problems can be solved quickly. Before starting an arbitration or a court case, you agree to send us a written notice describing the dispute and what you want, through the Help and support page or by email to [email protected], and we will send any notice to the email address on your account. We both agree to try in good faith to resolve the dispute for 60 days after the notice arrives. Time limits for bringing a claim are paused during those 60 days.

Binding arbitration. If we cannot resolve it, you and CardGrader LLC agree that any dispute, claim or controversy arising out of or relating to these Terms or the Service, including whether this section applies, will be resolved by binding individual arbitration administered by the American Arbitration Association ("AAA") under its Consumer Arbitration Rules, which are available at adr.org. One arbitrator decides. The arbitrator can award the same individual relief a court could, and must follow these Terms.

Exceptions. Either of us may bring an individual claim in small claims court if it qualifies, and either of us may ask a court for an order to stop the infringement or misuse of intellectual property.

No class actions and no jury. You and CardGrader LLC may bring claims against each other only individually, and not as a plaintiff or class member in any class, collective or representative proceeding. The arbitrator may not combine more than one person's claims or preside over any class or representative proceeding. You and CardGrader LLC both give up the right to a jury trial. If the class action waiver in this paragraph is found to be unenforceable for a claim, that claim will be decided by a court, not in arbitration, and only after any individual arbitration of the other claims.

You can opt out. You may opt out of this arbitration agreement within 30 days after you first accept these Terms. To do so, send us a message through the Help and support page (choose "Privacy or legal") or by email to [email protected] with the subject "Arbitration opt out", including your name, the email address or handle on your account, and a clear statement that you opt out of arbitration. Opting out does not affect any other part of these Terms.

Changes to this section. If we change this section, the change will not apply to a dispute we already knew about, and you may reject it by writing to us within 30 days of the change, in which case the previous version of this section keeps applying to you.

This section does not apply to you if you live in a country where the law does not allow it, such as a consumer living in the European Economic Area or the United Kingdom.

22. Changes to these Terms

We may update these Terms from time to time. When we make a material change, we will tell you before it takes effect, by a notice in the app or on the website or by email, and we will update the date at the top. Unless a change is needed sooner for legal or safety reasons, material changes take effect at least 14 days after we give notice. The app may ask you to accept the new Terms. If you do not agree to a change, stop using the Service and delete your account. If you keep using the Service after a change takes effect, you accept it.

23. App store terms

If you downloaded LobbyLab from Apple's App Store

These terms apply in addition to the rest of these Terms, and they win if the two conflict for the iOS app:

  1. These Terms are between you and CardGrader LLC only, not with Apple Inc. ("Apple"). CardGrader LLC, not Apple, is solely responsible for the LobbyLab app and its content.
  2. Your license to use the app is limited to a non-transferable license to use it on Apple-branded products that you own or control, as allowed by the Usage Rules in the Apple Media Services Terms and Conditions, except that the app may be accessed and used by other accounts associated with you through Family Sharing or volume purchasing where the app supports it.
  3. CardGrader LLC is solely responsible for providing any maintenance and support for the app, as described in these Terms or as required by law. Apple has no obligation to provide any maintenance or support for the app.
  4. CardGrader LLC is responsible for any product warranties, whether express or implied by law, to the extent they are not effectively disclaimed. If the app fails to conform to any warranty that applies, you may notify Apple, and Apple will refund the purchase price, if any, of the app to you. To the maximum extent the law allows, Apple has no other warranty obligation with respect to the app, and any other claims, losses, liabilities, damages, costs or expenses caused by any failure to conform to a warranty are the responsibility of CardGrader LLC.
  5. CardGrader LLC, not Apple, is responsible for addressing any claims by you or any third party relating to the app or your possession or use of it, including product liability claims, any claim that the app fails to conform to any legal or regulatory requirement, and claims arising under consumer protection, privacy or similar laws.
  6. If a third party claims that the app or your possession and use of it infringes that third party's intellectual property rights, CardGrader LLC, not Apple, is solely responsible for the investigation, defense, settlement and discharge of that claim.
  7. You represent and warrant that you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist-supporting" country, and that you are not listed on any U.S. Government list of prohibited or restricted parties.
  8. Questions, complaints or claims about the app go to CardGrader LLC through the Help and support page or by email to [email protected].
  9. You must comply with any third-party terms that apply when you use the app, such as your wireless data service agreement.
  10. Apple and its subsidiaries are third-party beneficiaries of these Terms. Once you accept these Terms, Apple has the right (and will be deemed to have accepted the right) to enforce them against you as a third-party beneficiary.

If you downloaded LobbyLab from Google Play

These Terms are between you and CardGrader LLC only, not with Google. Purchases made through Google Play are also subject to the Google Play Terms of Service, and Google's payment and refund policies apply to them.

24. General terms

25. Contact us

The Service is operated by CardGrader LLC. The fastest way to reach us is the form on the Help and support page, which is also in the app under You, Help and feedback. You can also email [email protected].

Questions?

Send us a message and we will get back to you. You can also email [email protected].

Contact support