Đàn Games: Privacy Policy
Last updated: 16 October 2026
This policy covers Đàn Games: the website buidan.com and its game sites (for example clayclash.buidan.com), run by Bui Dinh Dan ("we", "us"). Each game also has its own privacy policy, linked at the bottom of this page, which covers the iOS and Android apps.
Summary
- No accounts and no sign-up. We never ask for your name, email or other personal details to play.
- Game progress in the browser is saved in your browser's local storage, on your device only.
- Some browser games show ads from Google AdSense, which uses cookies.
- We do not sell your information.
Data Collection & Analytics
What we collect
We do not run analytics on this website and we do not collect personal information. Our servers and our network provider (Cloudflare) keep standard access logs, which include your IP address, browser type and the pages you request. They are used only for security, fixing problems and keeping the site running, and are deleted after a short period.
Games in your browser
Browser games save your progress, settings and the name you choose for your character in your browser's local storage. This data stays on your device and is never sent to us. Some games offer online play; when you choose it, the game connects to our game server and sends only what is needed to run the match (your in-game name, look and controls). See each game's privacy policy for details.
Advertising and Cookies
Some browser games on this website show ads through Google AdSense: optional rewarded ads you choose to watch, and occasional ads between matches.
- Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet.
- You may opt out of personalised advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalised advertising at www.aboutads.info.
- In the EEA, UK and Switzerland, Google's consent message asks for your choice before personalised ads are shown.
Learn more about how Google uses information from sites that use its services.
Third-Party SDK Disclosures
| Service | What it receives | Why | Policy |
|---|---|---|---|
| Google AdSense | Cookies or similar identifiers, IP address, browser and device information, ad interactions | Showing and measuring ads in browser games | Google Privacy Policy |
| Cloudflare | IP address, browser information, requested pages; may set a security cookie | Delivering the website quickly and protecting it from attacks | Cloudflare Privacy Policy |
| Google Fonts | IP address and browser information when fonts load | Displaying the website's fonts | Google Privacy Policy |
The mobile apps use other services (such as Google AdMob); they are listed in each game's privacy policy.
Children's Privacy (COPPA)
This website and its games are not directed at children under 13, and we do not knowingly collect personal information from children under 13, in line with the U.S. Children's Online Privacy Protection Act (COPPA) and similar laws. If you are a parent or guardian and believe your child has provided personal information, email [email protected] and we will delete it.
Account & Data Deletion
There are no accounts on this website, so there is no account to delete.
- Browser game data: clear the site data for buidan.com and the game's subdomain in your browser settings.
- Advertising data: manage or reset it at Google Ads Settings, or clear your browser's cookies.
- Anything else: email [email protected] and we will respond within 30 days.
Changes
If this policy changes, we will update this page and the date at the top.
Contact
Bui Dinh Dan
Email: [email protected]