Privacy Policy

KOMAINU LAB (lab.koma-inu.co.jp) ・ Effective October 11, 2026 ・ Revised October 24, 2026

KOMAINU LAB is a site of small games operated by Komainu Inc. This page explains what information we handle when you play and how we use it.

1. Operator and contact

• Operator: Komainu Inc. (https://koma-inu.co.jp/)
• Contact: lab@koma-inu.co.jp

2. Play statistics

To improve our games, we record how each game is played. We do not collect your name, email address or phone number, and there is no login. We send only the following:

• An anonymous ID: a random string created on your device. It is not linked to who you are. If you clear your device storage, a new ID is created.
• Play events: opening a game, starting, finishing a round, time played, pressing share, requesting / being shown / finishing a video ad, finishing a daily challenge, resetting your progress, and similar. These may include your score and time taken.
• The game name and version, display language, days since your first visit, visit count, and where you came from (a tag in the link and the host name of the previous page, sent as a category such as search, social media or this site's list; we never send the full address of the previous page or your search words. The category of your first visit and of your last visit is kept on your device).
• Rough device information: whether it is a smartphone, screen size, whether you are in an in-app browser of a social app (its type name only), and loading time.
• Error messages from the game (up to 80 characters).

These records are sent to an endpoint on the same site (/api/e) and stored in a service of Cloudflare, Inc. (Workers Analytics Engine) for three months, after which they are deleted automatically. We do not put IP addresses into these records (Cloudflare does process access information as part of delivering the site). We may use a cookieless analytics service (Cloudflare Web Analytics).

Use of Google Analytics (external transmission): To analyze usage and improve the site, we use Google Analytics (GA4), a service of Google LLC (USA). When you open a page, the following is sent to Google LLC.

• Information sent: the pages you view, device and browser type, screen size, language and rough region, where you came from (search, social media and similar referral information), and identifiers such as cookies. We do not send your name or email address.
• Purpose: analyzing usage and improving the site.
• In the European Economic Area, the UK and Switzerland, until you consent, data is sent in a cookieless way (consent mode set to "denied").
• For how Google uses data, see "How Google uses information from sites or apps that use our services".
• To stop it, install the Google Analytics Opt-out Browser Add-on.

3. Storage on your device

So you can continue where you left off, we save your progress, personal bests, sound setting, daily challenge record, the anonymous ID above and the category of where you came from in your browser's storage (localStorage). This data stays on your device and is removed when you clear your browser data. You can also erase the progress of a single game (progress, personal bests and so on) with "Reset data" on that game's first screen (the anonymous ID, the date of your first visit, the visit count and the category of where you came from are kept for the statistics). The games still work if storage is unavailable.

4. Advertising and cookies

This site may show ads through Google AdSense, a service of Google LLC.

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this site 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 personalized advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors' cookies at www.aboutads.info.
• To learn how Google uses data, see "How Google uses information from sites or apps that use our services".
• In the European Economic Area, the UK and Switzerland, you make your choice on Google's consent message. Without consent, ads are not personalized. You can change your choice from "Ad privacy choices" on a game's result screen.
• For ads that give a reward for watching a video, the reward is given only when you watch to the end. Watching is optional; you can keep playing without it.

5. Sharing and links

When you share a result, we open an outside service such as X or your device's share feature. Information handled there is subject to that service's policies.

6. Children

KOMAINU LAB is not directed to children under 13. We do not knowingly collect information from children under 13.

7. Versions on other platforms

If a game is also published on a game portal or as an app, that platform's policies also apply to that version. This page covers lab.koma-inu.co.jp.

8. Changes

If we change this policy, we will post the change on this page and update the date above.