Terms of Service — Isobath
Isobath is operated by the AI Agency. By using it you agree to these terms. Last updated 16 September 2026.
What Isobath is
Isobath is a free daily geography game played in your browser. Each UTC day it names five cities and asks you to place each one on a blank world chart; your score is the great-circle distance between your pin and the true location, in kilometres, summed over the five rounds.
There is no account, no sign-up, no purchase and no subscription. The game is supported by display advertising. Nothing on the site is sold to you, so there is nothing to refund and no billing relationship between us.
Your licence to play, and what stays ours
We grant you a personal, non-exclusive, non-transferable and revocable licence to play Isobath, for your own private, non-commercial entertainment. It is free, it needs no account, and it lasts as long as you keep to these terms.
Everything else stays ours. The Isobath name and any associated marks, the artwork, the chart and its rendering, the colour palette and typography, the code, the city list and all of the writing on this site belong to us or are used under the terms described in “The map, and what it does not claim”. Nothing in these terms transfers any of that to you, and no trademark, copyright or other right is granted by implication.
In particular, you may not copy, modify, redistribute, resell or sublicense the game or any of its assets; use our name, artwork or palette in your own product; scrape the city data or the chart geometry to build a competing game; present the game as your own; or remove, block or otherwise interfere with the advertising on it. Playing the game, and sharing your own result card and a link to the site, is exactly what this licence is for — do that as much as you like.
We may end this licence if you breach these terms — most obviously by attacking the site or generating invalid ad traffic, as set out under “Fair use of the site”. There is nothing to refund if we do, because Isobath is free and there is no purchase to unwind.
There is nothing for you to submit
Isobath has no text field, no comment box, no username, no profile and no upload. A pin is a coordinate, not a message. This is a deliberate property of the product rather than a policy we enforce after the fact: there is no path by which content you author could reach another player, including on the shareable result card, which is drawn from your five distances and the date and nothing else.
Because of that, there is no user-content licence to grant, no moderation process to appeal and no takedown mechanism for player-made material — none can exist here.
Your scores stay on your device
Your results, your streak and which days you have played are kept in your own browser's local storage and are never sent to us. Clearing your browser data erases them permanently; we hold no copy and cannot restore them. Playing on a different browser or device starts a new, separate history.
The percentile shown after a day is computed against a fixed benchmark curve that ships with the app and is measured in your own browser. It is not a live measurement of other people, it is not a leaderboard, and the wording on the result — “better than X% of our benchmark” — is deliberately about a benchmark rather than about players or their scores, because we have no way to know either. See the Privacy Policy for what does and does not leave your browser.
Fair use of the site
Please do not attempt to disrupt the service, probe it for vulnerabilities, or automate traffic against it at a scale that degrades it for other people. Please do not interfere with the advertising on the site or generate artificial ad activity — invalid traffic is enforced at the account level by our advertising provider and affects every product we run, not just this one.
You may play, and you may share your result card and a link. You may not redistribute the site itself, its city data or its map rendering as your own product.
The map, and what it does not claim
The world chart is drawn from Natural Earth 1:110m coastline data, which is in the public domain. It shows physical shorelines only: it carries no international boundary, no country or region name, no flag and no disputed geometry, and none may be added to it.
City locations are approximate point coordinates chosen for a game. They are not survey-grade, must not be relied on for navigation or any other practical purpose, and the presence or absence of any city on our list is not a statement about the status of any territory. Locations whose sovereignty is actively disputed are excluded from the pool by design.
Advertising and third parties
The site shows display advertising supplied by Google AdSense, and consent for advertising cookies is collected through a Google-certified consent management platform. Advertisements are served by third parties under their own terms and privacy policies; we do not control, endorse or take responsibility for the content of an individual ad or of any site it links to.
The Privacy Policy describes the cookies involved and how to change your consent choice.
No warranty, and the limits of our liability
Isobath is provided “as is” and “as available”, without warranties of any kind, express or implied, including any warranty of merchantability, fitness for a particular purpose or non-infringement. We do not warrant that the site will be uninterrupted, that a daily puzzle will always be reachable, or that the geographic data is free of error.
To the fullest extent permitted by law, we are not liable for any indirect, incidental or consequential loss arising from your use of the site, including lost scores or a lost streak.
Nothing in these terms excludes or limits any right that cannot lawfully be excluded or limited, and if you are a consumer, your statutory rights are unaffected. We do not ask you to waive rights that cannot be waived: a blanket exclusion of liability would itself be an unfair term as against a consumer under the EU Unfair Contract Terms Directive (93/13/EEC), and would not be enforceable against you anyway. Where such a right exists, it prevails over anything in this section.
Changes, and ending your use
We may change or discontinue the site, or update these terms, at any time. A material change will be reflected in the “last updated” date at the top of this page. Continuing to play after a change means you accept the updated terms.
You can stop using Isobath at any time by closing the page; there is no account to delete. Clearing your browser storage removes everything the site has kept.
Governing law and contact
These terms are governed by the laws of Croatia, without regard to conflict-of-law rules, and the courts of Croatia have jurisdiction. If you are a consumer resident in the EU or UK, you keep the protection of the mandatory consumer law of your country of residence.
Questions, complaints and legal notices: auto-ai-agency@quantum-solutions.hr. This is the only contact address for this product; we do not operate any other inbox.