Privacy Policy

1. Playing without an account

You can play without signing in. The game then stores data only in your browser (localStorage): the run in progress (an encoded code), the speed, the music settings, the achievements you have earned and a random code that identifies the browser. This random code contains no personal information.

When a run ends, the server stores that run's result (score, title, deviation from history, ending year) together with the browser's random code, so it can later be attached to an account if you register.

2. When you sign in

Sign in with e-mail or Google to keep your results, appear on the leaderboard and post on the forum. We then store:

• Your e-mail address (and, if you use Google, the display name and profile picture Google provides). We only ask for permission to see basic information (e-mail, profile) — we do not read your mail, contacts or other Google data.
• The nickname you choose (shown publicly on the leaderboard and the forum).
• The results of your runs, and the earlier runs from this browser, attached to your account.
• Posts, replies, bug reports and votes on the forum (public, except the device information in a bug report, which only the administrators can see).

Your sign-in session is kept with a sign-in cookie. Advertising cookies appear only on some pages, see section 8.

3. What the data is used for

• Running the game, the leaderboard, the forum and the news.
• Preventing fraud and abuse: IP addresses are used temporarily to limit the number of calls to the server and are not kept long term.
• Sending the sign-in e-mail when you ask for it. We do not send advertising.

We do not sell, rent or share your account data (e-mail, nickname, run results, posts) with third parties for advertising. Some pages carry Google advertising (section 8); the site uses no behavior analytics tools.

4. Where it is stored

The game runs on our own server (a VPS). Accounts, run results, the forum and the news are stored in the Supabase database service; signing in with Google goes through Google. These are the only infrastructure providers that process data for us (apart from Google's advertising, section 8).

5. Your rights

• Change your nickname at any time on the Account page.
• Delete the data in your browser: clear the site data for kientaosu.online in your browser settings.
• Ask to see, correct or delete your account and the data that goes with it: send the request through the Feedback section of the forum (or contact the administrators on the forum). We handle it within 30 days.

6. Children

The game suits all ages. People under 16 should have a parent's consent before creating an account.

7. Changes

When the policy changes, we update this page and show the update date at the top; major changes will be announced in the News section.