Privacy Policy
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Last updated: October 18, 2026. This policy covers the Taikyoku Shogi game (macOS, Windows, Linux and future Steam, Apple and Android versions), the website taikyokushogi.com, and our emails.
Who we are
Taikyoku Shogi is made and run by Keith Adler, an individual developer in the United States ("we", "us"). Contact: hello@taikyokushogi.com. For privacy requests use the privacy request form or write to the same address.
The short version
- The game works fully offline. Playing the computer, the tutorial and the puzzles send nothing to us. There is no account, no ads and no analytics inside the game.
- If you choose online play, the game sends a display name you choose, a random anonymous ID, and your moves to our game server so it can run the match.
- On the website we use Google Analytics only if you say yes in the cookie banner. Saying no (or sending a Global Privacy Control signal) keeps it off.
- We do not sell your personal information, we do not share it for advertising, and we do not use it to profile you.
What we collect, why, and for how long
| Data | When | Why | Kept |
|---|---|---|---|
| Saved games, settings, statistics, language | Always, but only on your device | To run the game | On your device until you delete the game's data folder. We never receive it. |
| Display name (you choose it), random anonymous ID, build number, moves and move timing, who you play | Online play | To match you, run and check the game, show the move list and statistics, and let others watch public games | Active games until they end; finished games about one hour; no permanent account database |
| IP address and technical connection data | Online play, and any visit to the website | To deliver the service, prevent abuse and fix problems | Operational logs, normally under 30 days |
| Email address, optional name, language, the time and wording of your consent | If you join the beta list or write to us | To send the beta news you asked for and to answer you | Until you unsubscribe or ask us to delete it (we act within 30 days) |
| Your message and any privacy-request details | If you contact us | To reply and to keep a record of requests | Up to 3 years for privacy requests (legal records); other messages up to 2 years |
| Page views, approximate location (country/city), device and browser, referrer, how you use the pages (Google Analytics cookies) | Website only, only after you accept analytics | To learn which pages help and what to fix | Cookies up to 2 years; event data in Google Analytics is kept for the period set in our Analytics settings (14 months at most) |
| Your cookie choice | Website | To remember your choice | 12 months, then we ask again |
We do not collect sensitive personal information, precise location, contacts, photos, microphone or camera data, payment card details, or government IDs. Purchases (when they start) are handled by the store you buy from (Steam, Apple, Google); we receive only the store's sales reports, not your payment details.
Online play and spectating
Your display name and your moves are visible to your opponent. Public games (found through "Find a game") are listed for anyone to watch, with both players' display names, the move count and the elapsed time. Private invite games are never listed. Please do not use your real name or other personal information as your display name. There is no chat and no voice. We may remove names that are abusive.
Who receives data
We use a small number of service providers who process data for us and may not use it for their own purposes:
- Fly.io (United States): hosts the game server, the website and the mail service.
- Resend (United States): sends our emails.
- Cloudflare: domain name and email routing for hello@taikyokushogi.com.
- Google LLC (United States): Google Analytics 4 (property ID G-W4M2J6J0ZG), only if you accept analytics; we turn off Google signals and advertising features. We also use Google Search Console, which shows us aggregated information about how the site appears in Google Search (queries, clicks, indexing); it gives us no personal data about individual visitors.
- Valve (Steam), Apple, Google Play: when you download or buy through them, their own privacy policies apply.
We may disclose information if the law requires it, to protect people's safety or our rights, or in a sale of the business (with the same protections).
International transfers
Our servers and providers are in the United States. If you are in the EU/UK, Switzerland or Japan, your data is transferred to the United States. Where required we rely on the providers' Data Privacy Framework certifications or standard contractual clauses.
Your rights
Everyone: you can ask what we hold about you, ask us to correct or delete it, and unsubscribe at any time. Use the request form. We may need to confirm your identity (for example by replying to the email address in question). We do not charge for this and do not treat you differently for using your rights.
California and other US states (CCPA/CPRA, and laws in Virginia, Colorado, Connecticut, Texas, Oregon and others): you may know, access, correct and delete your personal information, opt out of sale/sharing and targeted advertising (we do neither), and appeal a refusal. See Your privacy choices. We respond within 45 days. An authorized agent may act for you with your written permission.
EU, UK and Switzerland (GDPR): access, rectification, erasure, restriction, portability, objection, withdrawing consent at any time, and the right to complain to your supervisory authority. Our legal bases: performing the service you asked for (contract), your consent (analytics cookies, email list), and our legitimate interest in running a secure game server.
Japan (Act on the Protection of Personal Information): see the Japanese privacy policy for disclosure, correction, deletion and cessation of use.
Children
Taikyoku Shogi is a general-audience game and is not directed to children under 13. We do not knowingly collect personal information from children under 13 (COPPA). Online play and the email list are for people 16 or older, or younger people with a parent's or guardian's permission. If you think a child gave us personal information, write to us and we will delete it. The offline game collects nothing.
Security
Connections to the game server and the website use TLS. The server checks every move and keeps only what it needs. No system is perfectly secure; tell us at hello@taikyokushogi.com if you find a problem.
Do Not Track and Global Privacy Control
If your browser sends a Global Privacy Control signal (or Do Not Track), we treat it as a "reject analytics" choice and as an opt-out of any sale or sharing.
Changes
If we change this policy in a meaningful way (for example, adding analytics to the game), we will post the new version here with a new date and, for email subscribers, tell you.