Mahjong Monsters Terms of Service

Effective date: September 19, 2026

These Terms of Service (the "Terms") set out the conditions for using "Mahjong Monsters", a smartphone game for iOS and Android (the "App") provided by Pocosoft Inc. ("we", "us"). Anyone who uses the App (the "User") agrees to these Terms before using it. Tapping "Agree" when the App is first launched constitutes agreement to these Terms.

Article 1 (Scope)

These Terms apply to every aspect of the relationship between the User and us regarding use of the App.
How information is handled in the App is set out in our separate Privacy Policy, which forms part of these Terms.
The App is distributed through the App Store or Google Play. The terms of the respective store also apply, and prevail over these Terms where they conflict.

Article 2 (The App)

The App is a game in which you raise monsters and advance through dungeons by playing a puzzle with mahjong tiles. It involves no gambling; there is no feature for wagering money or prizes.
The App has no user accounts. All game progress is stored on the User's device (and in the User's own iCloud / Google account backup). We do not hold your progress and cannot recover data lost through loss or reset of the device, deletion of the App, or similar. The User can save and restore a save-data file using "Export" and "Import" inside the App.
The App is free to use. No network connection is needed to progress in the game, and it can be used offline except for advertising and a few features.

Article 3 (Advertising)

The App may show an advertisement after the battle result screen is closed. Ads are served by Google AdMob.
The User can stop the ads after battles by purchasing the in-app product "Remove Ads" described in Article 4.
The content of advertisements is determined by the advertisers and the ad network; we are not responsible for it.

Article 4 (In-app purchases)

The App offers the following in-app purchases. Prices are as displayed in each store.
- Remove Ads (one-time): ads after battles are no longer shown.
- Forced Evolution (consumable): grants one ticket to evolve a monster.
Payments are processed by Apple or Google. Cancellations and refunds are governed by the store's terms and procedures; we are not in a position to decide on refunds.
The one-time product can be regained with "Restore Purchases" inside the App when using the same store account. Consumable products and used tickets are not restored.
Purchased entitlements are stored on the device. We do not compensate for unused consumable tickets lost through a device reset or deletion of the App.
Entitlements obtained through in-app purchases can be used only within the App and cannot be exchanged for cash or any other property.
Minors must obtain the consent of a parent or legal guardian before making in-app purchases.

Article 5 (Intellectual property)

All intellectual property rights, including copyrights and trademarks, in the program, monster and character artwork, images, music, sound effects, text, names and all other content that make up the App belong to us or to the rightful owners who have licensed them to us.
We grant the User a non-transferable, non-exclusive right to use the App for personal purposes in accordance with these Terms. This licence is not a transfer of intellectual property rights.
Sharing screenshots or gameplay videos for personal enjoyment is permitted.

Article 6 (Prohibited conduct)

When using the App, the User must not:

violate any law or public order and morals;
modify, reverse engineer, decompile or disassemble the App's program or data;
tamper with save data, use cheating tools, or otherwise make the App operate in a way other than intended;
copy, redistribute or sell the App's content without our permission;
place fraudulent clicks or other improper load on the App or its advertising;
infringe the intellectual property, privacy, reputation or other rights of us or any third party;
engage in any other conduct that we reasonably judge inappropriate.

Article 7 (Changes, suspension and termination of the App)

We may change the content of the App (including game balance, monsters, stages and prices), or suspend or terminate distribution or support of the App, without prior notice to the User.
If we discontinue an in-app product, we will endeavour to give reasonable advance notice. One-time entitlements already purchased remain valid for as long as the App runs on the device.
We are not liable for damage caused to the User by the preceding paragraphs, except to the extent set out in Article 9.

Article 8 (No warranty)

We do not warrant that the App will suit the User's particular purpose, have the expected functions, value or accuracy, be free of defects, or run on every device and OS version. The App is provided "as is".

Article 9 (Limitation of liability)

We are not liable for damage caused to the User in connection with use of, or inability to use, the App, except where caused by our wilful misconduct or gross negligence.
Where we are liable, our liability is limited to the amount the User paid us through in-app purchases in the App in the month in which the damage occurred, except in cases of our wilful misconduct or gross negligence.
Provisions of these Terms that limit the User's rights do not apply to the extent they are invalid or inapplicable under the Consumer Contract Act of Japan or other applicable law.

Article 10 (Relations with other users and third parties)

The App has no feature for users to interact with each other. Any dispute arising between the User and a third party in connection with the App shall be resolved at the User's own responsibility and expense; we will not be involved.

Article 11 (Changes to these Terms)

We may change these Terms when we deem it necessary, without individual notice to the User.
The revised Terms take effect when posted on this page. For important changes, the App will ask for your agreement again at launch.
By using the App after a change, or by tapping "Agree" at launch, the User is deemed to have agreed to the revised Terms.

Article 12 (No assignment)

The User may not assign or pledge any rights or obligations under these Terms to a third party without our prior written consent.

Article 13 (Governing law and jurisdiction)

These Terms are governed by and construed in accordance with the laws of Japan.
Any dispute between the User and us regarding the App shall be subject to the exclusive jurisdiction of the court having jurisdiction over the location of our head office as the court of first instance.
These Terms are written in Japanese; this English version is a reference translation. In the event of any discrepancy, the Japanese version prevails.

Article 14 (Contact)

For questions about these Terms or the App, please contact:

Pocosoft Inc.
contact@pocosoft.jp