Terms of Service

Article 1 (Scope)

These Terms apply to every relationship between the provider of the App (“we” or “us”) and users concerning the use of the App.

The App is provided to users in the countries and regions where we distribute it through each app store (it is not distributed in mainland China). In some regions, we may not offer certain features, such as the gacha, until our legal review is complete. We do not guarantee compliance with the laws of countries or regions outside our distribution.

Article 2 (Accounts)

Your account in the App is anonymous and is not linked to your name or email address. It is tied to you only through the session stored on this device (the local storage of the device). If that session is lost — for example, when the App is uninstalled, the device is reset, or the device storage is cleared — there is no way to restore the same account. Your rank, campaign progress, territories, in-game currencies (war funds, Mandate stones, and Tamahagane steel), items, and online record will all be lost. A feature for carrying an account over to another device is not currently offered. Items you purchased may become available again, based on your purchase record, when you use “Restore purchases” in the App with the same store account.

The App does not ask you to register your name, email address, phone number, or similar information. An anonymous account is issued automatically when you first open the App (or, if you are offline, the next time you are online). Records for features that rely on our servers (such as in-game currencies, items, and progress, online matches, or purchases) are tied to this account. You can delete the account from the App’s Settings screen. Please see the Privacy Policy for details.

If you set a display name, it is visible to your opponents in online matches (rankings are not currently offered). Do not include information that can identify you, such as your real name or contact details, words that impersonate others or the operator, or inappropriate words. We may remove inappropriate display names without notice. You can report an inappropriate display name through the Contact page.

Article 3 (Eligible age and use by minors)

The App is intended for users aged 13 and over and is not directed to children under 13. The App does not ask for or collect your age or date of birth.

If you are a minor, please use the App and make purchases with the consent of your parent or other legal guardian. A purchase made by a minor without that consent may be cancelled by the minor or the legal guardian under applicable law (Article 5 of the Civil Code of Japan). We will guide you through the cancellation and refund through the procedure of the app store where the purchase was made, or through our contact address.

Parents and guardians are also encouraged to use the parental features provided by each operating system (such as purchase approval).

Article 4 (In-game currencies and items)

The App has in-game currencies called war funds, Mandate stones, and Tamahagane steel. All of them are obtained free of charge, for example as game rewards, tribute, campaign clears, bonds, achievements, or by watching rewarded ads. We do not sell any in-game currency.

1. In-game currencies and items (lieutenants, stratagem cut-ins, the look of stones and boards, titles, and so on) are for use within the App and have no monetary value. They cannot be exchanged for cash, other currencies, or value in other services, and they are not refunded.
2. You may not transfer, lend, sell, or buy in-game currencies or items to or from other users or third parties, nor sell or buy accounts. The App has no feature for doing so, and trading them outside the App is also prohibited.
3. The balances of in-game currencies and the items you hold are as recorded on our servers. If the display on your device differs, it will be corrected to match the server record.
4. If something is granted incorrectly because of a defect or misconduct, we may revoke or correct it.
5. If you delete your account, or if your account is lost (Article 2), all in-game currencies and items are lost and cannot be restored.

Article 5 (Gacha)

The gacha in the App (a draw in which you receive an item at random) can be drawn only with free Mandate stones. You cannot pay money to draw the gacha. Items you purchase never come from the gacha, and gacha items cannot be purchased (the items we sell and the gacha items are separate).

• The drop rate (probability) of each item is shown, including decimal places, on the gacha screen in the App and on the rates page of our website. Both are drawn from the same version of the table.
• Draws are performed on our servers. If we change the drop rates, we publish the new table in advance together with the date and time of the change, and we never rewrite a table that has already been published.
• Points accumulate with each draw, and with the required number of points you can exchange them for any item in the current table (a so-called pity system). How the points are counted is described on the rates page.
• If you draw an item you already own, it is converted into the forging material “Tamahagane steel”. Tamahagane steel can be used only to advance forging stages and cannot be exchanged for items.
• There is no mechanism in which collecting different items yields another item (a so-called “complete gacha”).
• We may not offer the gacha in countries or regions where our legal review is not complete. Whether it is offered is determined by the country of the app store you use for purchases.

Article 6 (Prohibited conduct)

When using the App, you must not engage in any of the following.

1. Improperly manipulating game results, ratings, progress, in-game currencies, or items. This includes altering communications, rewriting saved data, submitting false reports to the server, and deliberately fixing results or farming rewards with multiple accounts.
2. Selling, transferring, or exchanging for money in-game currencies, items, or accounts outside the App, or offering to do so.
3. Reverse engineering, decompiling, disassembling, or otherwise analyzing or modifying the source code of the App, except where such acts are expressly permitted by law.
4. Playing online matches with bots, scripts, external Go engines, or other automation tools, or having anything other than a human play games on your behalf.
5. Sending requests to the match server, the features that use generative AI, or other server functions at a frequency that substantially exceeds normal use, or accessing them for load testing or penetration testing.
6. Exploiting vulnerabilities or defects in the App, or attempting to circumvent authentication or access control.
7. Using discriminatory, obscene, or violent expressions, or expressions that infringe the rights of others.
8. Infringing the copyrights, trademarks, or other rights of other users, third parties, or us.
9. Copying, distributing, lending, redistributing, or commercially using all or part of the App without our permission.
10. Acts that violate laws or public order and morals, or acts related to criminal activity.
11. Any other conduct that we reasonably consider inappropriate.

If we determine that a user has violated the preceding paragraph, we may, without prior notice, correct that user’s rating, record, in-game currencies, or items, suspend their use of online matches, or take other necessary measures.

Article 7 (Provision, changes, and interruption of the service)

We may change the content of the App, or suspend or end its provision, without prior notice. However, we announce changes to gacha drop rates in advance as described in Article 5.

Games against the on-device AI work offline. On the other hand, records of in-game currencies, items, and progress, online matches, the features that use generative AI, and purchases require a network connection and our servers, and may be unavailable because of maintenance, outages, or connection conditions.

Article 8 (Intellectual property and trademarks)

All rights to the App and to the programs, images, audio, and text it contains belong to us or to their rightful owners.

The App is based on “Go”, a board game in which players take turns placing black and white stones on a board and compete for the size of the territory they surround. The way Go is played and its name are general terms that belong to no particular rights holder. The App has no capital or business relationship with any provider of existing Go software or Go services, and does not use their names or trademarks in the App’s name, description, or in-app display. The App is not endorsed or supervised by any organization that runs Go tournaments or by any professional Go player, and has no partnership with them. The dan, kyu, rank, and similar labels in the App are guides within the App only and are unrelated to the ranks of any organization.

The people, events, and places of the Three Kingdoms period that appear in the App are used as descriptions derived from historical records and classical tales. The App is unrelated to other companies’ works based on the Three Kingdoms and does not use their designs or expressions.

Article 9 (Fees)

The App is free to use, and you can play games and all 50 campaigns of the main story at no charge. There are two kinds of paid offerings: a monthly subscription and one-time purchases. With the monthly subscription “Strategist’s Counsel” (auto-renewing every month), you can use the AI strategist’s advice (the text of in-game advice and the post-game review in the war council) and move scoring (scoring of your playing tendencies and the AI coach), and the ads shown at breaks between games stop while the subscription is active. We also sell “Remove Ads” in the App as a one-time purchase. “Remove Ads” stops the ads shown at breaks between games, but does not include the AI strategist’s advice or move scoring (these are available only with the monthly subscription). “Remove Ads” changes only whether ads are shown, and has no effect on playing strength, the rules of Go, or how games are decided. The AI strategist’s advice only suggests moves for reference; it never plays a move for you, and it is not shown during online games against other players. The gacha (random draw) can be drawn only with Mandate stones, which you obtain free of charge in the game. You cannot draw the gacha with money, and we do not sell any in-game currency. Purchases are made through the App Store / Google Play on the device where the App is installed. Prices are shown, inclusive of tax, as displayed by the store on each app store's product page and on the purchase screen within the App. Payment methods are those of each store.

The monthly subscription “Strategist’s Counsel” has a term of one month and renews automatically for each term. The fee, at the price shown on the purchase screen and in the store, is charged to your store account when you confirm the purchase. Unless you cancel at least 24 hours before the end of the current term, it renews automatically for the same term at the same price, and the renewal is charged within 24 hours before the end of the term. You can cancel and manage it at any time: on iPhone and iPad from Settings → your name → Subscriptions, and on Android from Google Play → Payments & subscriptions → Subscriptions. Deleting the App does not cancel the subscription. If you cancel, you can keep using it until the end of the term you have already paid for. We do not give pro-rata refunds for cancelling mid-term (whether a refund is possible depends on each store’s rules). Before you purchase, the purchase screen shows the name, term, price, and auto-renewal conditions.

Purchase procedures, payments, and refunds are handled through the billing system of each app store. We never receive your credit card number or other payment information.

A purchased item becomes available when our server receives the purchase notification from the store. Until the notification arrives, the App shows the purchase as “processing”. An item that has been refunded can no longer be used, and if it was equipped, the default look is restored. When the monthly subscription ends or is refunded, the AI strategist’s advice and move scoring can no longer be used, and unless you have purchased “Remove Ads”, the ads at breaks between games are shown again.

Article 10 (Disclaimers)

1. We do not guarantee that the App is fit for any particular purpose of yours, that it has the functions, accuracy, or usefulness you expect, or that it is free from defects.
2. If you suffer damage in connection with the App because of our breach of obligation or tort, then, except where we acted with intent or gross negligence, we compensate only ordinary and direct damage actually incurred by you, up to the amount you paid for purchases in the App in the month in which the damage occurred.
3. We are not responsible for recovering game records or settings stored on your device that are lost because of device failure, uninstalling the App, an OS update, lack of storage, or any other reason.
4. The text produced by the features that use generative AI (such as the strategist’s review) is generated automatically by generative AI (Google Gemini), and we do not guarantee its accuracy or appropriateness. Please use it for reference only.
5. We are not responsible for the conduct of other users in online matches. Disputes between users should be resolved between the parties involved.

Article 11 (Handling of personal information)

The handling of information in the App is governed by our separate Privacy Policy, which forms part of these Terms.

Article 12 (Governing law and jurisdiction)

These Terms are governed by and construed in accordance with the laws of Japan.

Any dispute between us and a user concerning the App shall be subject to the exclusive jurisdiction, in the first instance, of the Japanese court that has jurisdiction over our location.

Article 13 (Changes to these Terms)

We may change these Terms when we consider it necessary. The revised Terms take effect when they are posted on this page.

For significant changes that are disadvantageous to users, we will announce the changes and their effective date at the top of this page and in the App before the effective date. If you use the App after a change, you are deemed to have agreed to the revised Terms.

Article 14 (Contact)

For inquiries about these Terms, please contact us at the address listed on the Contact page.