Terms of Use

App: Aquageorama / Effective: 2026-10-16 / Revised: 2026-11-10 (Section 4a, treasure chest); 2026-11-07 (Sections 3 and 4, purchases on the web version) / Provider: IWANAWORKS, K.K. ("we")

1. Scope

These terms govern the use of Aquageorama (the "App"). By installing or using the App you agree to these terms. The Japanese version prevails if the two versions differ.

2. Account

The App creates an anonymous account per device on first launch. No name or e-mail address is required.
You may register your account with an Apple or Google account. A registered account can be used on other devices (iOS, Android and the web version) where you sign in with the same Apple / Google account.
An anonymous (unregistered) account can be used only in the App on the device that created it. Tank data and Aqua Coins (including paid coins) cannot be transferred when you change or reset your device or delete the App.
If you sign in to a different registered account on a device that already has data, the data of that device's anonymous account (tanks, purchased items, free Aqua Coins, etc.) is not carried over and the data of the account you switch to is used instead. However, the remaining balance of paid Aqua Coins in that anonymous account is added to the account you switch to. We show a confirmation in the App before switching.
You can delete a registered account from the App's settings screen. For an anonymous account, you may ask us to delete it by contacting us with the account ID shown in the settings screen. Deleted data (including paid Aqua Coins) cannot be restored or refunded.
You are responsible for managing the Apple / Google account you use to sign in.

3. Aqua Coins

"Aqua Coins" are a virtual currency usable only inside the App. Some are granted free (initial grant, rewarded ads); others are bought through in-app purchase or on the web version (paid coins).
Coins can only be exchanged for items (stones, driftwood, plants, fish, substrates, etc.), tank slots, the treasure chest and features such as widgets inside the App. They cannot be exchanged for cash or other points, transferred or lent.
Paid coins are non-refundable except where required by law. Refunds of in-app purchases follow the rules of the App Store / Google Play, and refunds of web purchases follow the terms of Xsolla; coins corresponding to a refunded purchase are deducted from the balance.
Within the limits of the law, we may set an expiry for coins or change the conditions for granting and using them, with notice in the App or on this page.
We comply with the Japanese Payment Services Act and other applicable laws, including any required disclosures and filings.

4. Purchases

Payments are processed by Apple (App Store) or Google (Google Play); prices are shown in the App.
Purchases on the web version are sold and processed by the payment service Xsolla as Merchant of Record; prices are shown on the Xsolla payment page. Purchases on the web version require signing in with an Apple or Google account.
Crediting may be delayed by connectivity problems. Unconfirmed purchases are re-checked automatically after restarting the App with the same account.

4a. Treasure chest

The "treasure chest" lets you spend Aqua Coins to receive an item chosen at random from the chest's contents. The number of coins per opening, the price for opening several at once and the conditions for free openings are shown on the chest screen.
The chest only gives items your account does not already own. Before opening, the chest screen shows the full list of contents and the probability of receiving each item. Contents differ between users and change as you collect more items.
The chest includes items available only from the chest and items included for a limited period. We may provide a mechanism that guarantees an item of a certain kind after a set number of openings; any such mechanism is also shown on the chest screen.
The probabilities shown apply to each single opening and do not guarantee that you will receive a particular item within a particular number of openings (except under the mechanism described above).
Items received from the chest, like other items, can be used only in the App and cannot be exchanged for money, transferred or traded. Aqua Coins spent on the chest are not refunded except where required by law. If a result is not shown because of a connection problem or similar, the result recorded on our server is still applied to your account.
Where local laws require, we may not offer opening the chest with Aqua Coins in certain countries or regions. To decide this we use the country or region of your store account (on the web version, the country or region estimated from your browser's time zone and language).
We may change the chest's contents, probabilities, guarantee mechanism or opening conditions, or suspend or end the chest. Changes are shown on the chest screen and do not affect items received before the change.

5. Advertising

The App may show rewarded ads. Ad content is provided by advertising networks and we are not responsible for it.

6. Intellectual property

The App and its assets (3D models, images, text, software) belong to us or our licensors. Attributions for Creative Commons and similar licensed assets are listed under "Asset credits" in the App.
You may use the tank layouts you create and the images you export for personal purposes, including posting on social media. You may not redistribute or sell the App's assets outside the App.

7. Gallery and sharing

If we provide a feature to publish or share tanks (the gallery):

You grant us a free licence to display, copy and distribute your published layout, author name and title within the App.
Content that is offensive, infringes others' rights, contains third parties' personal information, or is advertising or spam is prohibited.
We may hide or remove published content and restrict posting based on reports or at our discretion.

8. Prohibited conduct

Modifying or reverse-engineering the App, obtaining coins or items by improper means, or sending improper requests to our servers
Infringing the rights of other users or third parties, or violating laws or public order
Interfering with the operation of the App

We may suspend violating users and void their coins without prior notice.

9. Disclaimer

We do not guarantee that the App is free of defects or interruptions, or that it runs on any particular device. The App uses demanding 3D rendering and may run slowly or fail to display on some devices.
Except in cases of our wilful misconduct or gross negligence, we are not liable for damages arising from use of, or inability to use, the App. Where we are liable, our liability is limited to the amount you paid us for the transaction that caused the damage, unless applicable consumer-protection law provides otherwise.

10. Changes to and termination of the service

We may change the App or end the service with prior notice. If the service ends, unused paid coins will be handled in accordance with applicable law.

11. Changes to these terms

We may change these terms. Changes take effect when published on this page; significant changes are also announced in the App.

12. Governing law and jurisdiction

These terms are governed by the laws of Japan. Disputes are subject to the exclusive jurisdiction of the Osaka District Court in the first instance.

Contact

IWANAWORKS, K.K.
E-mail: nishioka@iwana.works