Privacy

日本語版

What is stored and what is not.
Last updated October 2026

What is stored

Only when you submit to a ranking, the name and score you enter are stored on our servers. Some works store a little more, as described below.

Sushi Stack also stores a number generated on your device and the move history of that run. The history is used to check that the score adds up. The device number is a random string created on your device and is used only to group records from the same device. It does not identify anyone.

Stop at 10 seconds stores only your name, the errors of your three tries and the time you submitted. It does not create a device number. The day’s ranking is cleared when the date changes.

Negaeri Shogi, when you play online (and when you open the ranking), stores a device-generated number, your name (default: “Anonymous” in Japanese), your rating, win/loss counts, and the moves and result of each game. Your name and rating appear in the ranking. Playing against the AI, or two players on the same device, stores nothing.

Anime Type Quiz calculates your answers on your device only and sends them nowhere.

Draft Party (/draft/) keeps, only for the lifetime of a room and for the sake of play, a device-generated number, your team name, the names of the players you raise, the players (or options) you pick, chat messages, reports and the room settings. If you use your own image as a team icon, a version shrunk on your device is sent only to the other participants of that room (in random match and public rooms it is not shown on the lobby and results screens, which carry ads — an emblem is shown instead). An inappropriate image is hidden for everyone after two reports. If a host registers players’ names and abilities, that content is likewise handled only inside that room. There is no ranking. A room’s data, including reports, is deleted 10 minutes after the game ends (30 minutes after a room is abandoned). Stamps and quick phrases are not stored.

Only if you choose “Share this player with the world” for a player you raised in Draft Party, that player’s name, position, stats and achievements are stored on the server for 30 days (up to the latest 1,000) and shown as a “world player” in other people’s drafts. Your team name, the device-generated number and other information that could identify you are not stored with it. Inappropriate players are removed after two reports from users. For shared players we store only counters such as how many times they were drafted.

What other participants type — chat, names and so on — is shown to the people in the same room. If a host registers real people’s names or similar, that content is the host’s responsibility. Inappropriate content is filtered automatically, and can be reported (two reports hide it for everyone).

You can choose any name. You do not need to use your real name.

What is not stored

Nothing else is collected. There is no registration and no mechanism to track individuals. We do not receive your email address, phone number or location.

The site runs Cloudflare Web Analytics, which counts how many times pages are opened and which pages are read. It is not used to track individuals or for advertising.

What stays only on your device

High scores, personal bests, collection data, language and sound settings — and, for Draft Party, your team name, icon, device number (for rejoining) and last choices — stay only on your device. If you do not submit to a ranking, nothing leaves your device. Clearing your browser’s storage removes it.

Comments on articles

Some articles have a comments section. Only when you press “Open comments” does your browser connect to giscus (giscus.app) and GitHub. If you do not press it, no connection is made. Writing a comment requires a GitHub account, and comments are public, stored in GitHub Discussions with your GitHub username. You can delete your own comment on GitHub.

If you want something deleted

To remove a record you submitted to a ranking, contact the address on the About page (Japanese) with the name you used. We will confirm and delete it.

Where it is hosted

This site and the ranking servers run on Cloudflare. Sushi Stack and Negaeri Shogi rankings are stored in Cloudflare D1 (a database), and Stop at 10 seconds in Cloudflare KV. Draft Party room data is kept in Cloudflare Durable Objects for the period described above.

About advertising

When our games are published on other sites (game portals), that site’s own advertising systems may apply, under that site’s policy.

This site shows ads through Google AdSense. Google and other third-party vendors may use cookies to serve ads based on a user’s previous visits to this site or other sites. Details are in Google’s advertising policies.

You can turn off personalized advertising at any time in Google Ad Settings, or opt out of third-party vendors’ cookies at aboutads.info. Visitors in the European Economic Area and the UK first see a consent prompt provided by Google. We do not receive cookie information for any purpose other than ads.

Children

We do not ask for age and do not collect information related to age. Apart from the name you put in a ranking, and what you type inside a Draft Party room (such as chat), nothing reaches us.

On October 23, 2026, we added how Draft Party (/draft/) is handled.

This is the English version of the Japanese privacy page. If they differ, the Japanese page is the original.