Privacy Policy

Kkurei Games (the “site”) does not require accounts and processes only information needed to operate its leaderboards.

1. Information and purposes

• When submitting a leaderboard entry: the name (nickname) you enter, score, play time and submission time, to display the leaderboard.
• When sending feedback or an inquiry: category, message, originating site, submission time and optional reply email, to handle and respond to inquiries. Only the operator can see them.
• Preventing fraudulent submissions: an irreversible hash of the connection IP and a secret value, used only to prevent excessive submissions from the same source. The original IP is not stored.
• Stored only in your browser: your last name entry, personal best, sound settings, whether you have viewed the instructions, and your daily streak and challenge dates. These stay in localStorage and are not sent to the server.
• Card issuing: When a mini-game ends, a card (rarity, stats and serial number) is created and stored on the server. No name is collected; an IP hash is used only to limit the number of cards per day. When you tap Share link, the picture of that card (an image showing its number, rarity and stats) is uploaded to the server for the link preview. Your collection list stays only in your browser.
• Invite link: When you tap Share score, your name and score are put in the link. This is information already shown on the leaderboard, and it is only used to show the recipient a challenge message — it is not stored.

If you do not submit a leaderboard entry, no leaderboard information is stored on the server.

2. Advertising and cookies

To keep this site free, we show Google AdSense ads. Google and its advertising partners may use cookies and similar technologies to show ads based on visits to this and other sites. Personalized advertising can be managed in Google Ad Settings; for more details, see Google Advertising Policies.

3. Retention

Leaderboard entries are retained while the site operates and deleted promptly on request. Inquiry messages and email addresses are deleted within one year after a response or resolution.

4. Service providers

The site and leaderboard data are hosted and operated using Cloudflare, Inc. services (Cloudflare Pages and D1).

5. Name removal requests and inquiries

Name removal requests and inquiries: [email protected]

The operator may remove inappropriate names or names that appear to impersonate someone without notice.

Effective date: 2026-10-12