Gravline Terms of Service
Last updated: November 10, 2026
These terms are an agreement between you and Complete OS LLC. By playing Gravline, you agree to them. If you're under 18, a parent or guardian needs to agree to them for you. Gravline is made for ages 13 and up.
1. Your license to play
You may play Gravline for personal, non-commercial fun. You may not copy, resell or redistribute the game, or use its art, models or code in something else.
2. Credits and upgrades
Credits are earned by racing and spent inside the game. They have no real-money value, can't be bought, sold or exchanged, and aren't your property. The game is free today. If that ever changes, we'll tell you the price before you pay anything.
3. Online rooms
- Share a room code only with people you know.
- Don't use a racer name that's offensive or that contains personal information.
- Don't cheat, tamper with other players' games, attack our services or try to get around their limits.
Online play connects devices directly, so it may not work on every network. We don't monitor rooms.
4. Your saves
Your save lives on your device, and it can be lost if you clear your browser or remove the app. Cloud saves are deleted after a period without use, as the Privacy Policy explains. Anyone with your sync code can open or change your save, so keep it private.
5. Ownership
Complete OS LLC owns Gravline, including its name, code, machines, tracks and art. The music is public-domain (CC0) work by other artists, listed in the music credits. Gravline also uses open-source software under its own licenses.
6. Changes and ending
We may change, pause or stop the game or any feature at any time. We may block anyone who breaks these terms. You can stop playing at any time.
7. No warranty
Gravline is provided "as is" and "as available", without warranties of any kind, including fitness for a particular purpose and non-infringement. We don't promise that it will always work, be free of errors or keep your progress. A small number of people can have seizures from flashing lights or fast-moving patterns, even with no history of them. If you or your child feel dizzy, see blurred vision, twitch or lose awareness while playing, stop right away and see a doctor. Take breaks.
Don't play while driving or anywhere it isn't safe to be looking at a screen.
8. Limit of liability
To the maximum extent the law allows, Complete OS LLC isn't liable for indirect, incidental, special or consequential damages, or for lost data or progress. Our total liability for anything related to the game won't exceed US$50. Some places don't allow these limits, so they may not all apply to you.
9. Governing law
These terms are governed by the laws of the United States and the state in which Complete OS LLC is registered, without regard to conflict of law principles. Any dispute will be resolved in the courts of competent jurisdiction in that state, unless the law where you live gives you a different right.
10. Changes to these terms
If these terms change, we'll update this page and the date above. Playing after that means you accept the new terms.
11. Contact
Complete OS LLC · hello@completeos.app