Privacy Policy

Established: September 26, 2026 / Last revised: October 6, 2026

This English version is a translation provided for convenience. The Japanese version is the official version, and it prevails if the two differ.

Solutive Inc. ("we", "us", or "our") sets out this Privacy Policy ("this Policy") for how we handle user information in our game "Rampart Knights" ("the Game") and in the web page for creating and posting stages for the Game ("the Creation Page").

1. Basic Policy

Your progress, settings, and purchase status in the Game are saved on your device (while you use Data Sync, we temporarily hold a copy of your progress on our server). We only send our server the information needed for online features such as online co-op, Rankings, Community Stages, Community Gardens, Data Sync, reports, and feedback.

The Game has no ads, no analytics, and no tracking. Inside the Game app, we do not collect email addresses, real names, contacts, location information (such as GPS), or advertising identifiers. However, when you make an online co-op room public, we estimate your country or region from your connection's IP address, as described in 2-3.

2. Information We Collect and How We Use It

2-1. The Game app

Device ID	When you first launch the Game, it creates a random ID and an authentication key on your device. These are sent to our server when you use online features and are used to confirm that records and actions come from the same user. We store only a value calculated from the key (a hash), not the key itself.
Display name	The name you set (up to 12 characters). It is shown to other users in Rankings and co-op play. It is sent to our server when you set or change it while Rankings are available.
Play records	When you start and finish Endless mode, the Game sends the stage, class, level, gear, stats, soldier lineup, wave reached, number of enemies defeated, play time, and similar data. We use this to compile and display Rankings and to detect cheating. Other users can see the class, gear, and other details of records that appear in Rankings.
Community Stages usage	We record stage downloads and likes together with the ID that made them. We use this to sort by popularity and to prevent duplicates from the same user. Downloaded stages are saved on your device.
Reports	When you report a name, record, Community Stage, or Community Garden, we record the reporting ID, the reported ID, and the name at that time. We use this to review and act on inappropriate content.
Community Gardens	When you post your garden, we store its layout (terrain, which buildings, decorations, and residents are placed where, the chosen music, and so on), its title, and the app version, together with your ID. The title, content, and your display name are shown to other users. When you visit or like someone else's garden, we record which ID did so. We use this to show visit and like counts and to prevent duplicates from the same user.
Co-op blocks	In online co-op, when a room's host uses "Block and Remove" on a player, we record the host's ID and the blocked device's ID. We use this to keep the blocked device out of rooms that host creates in the future.
Feedback	We store the category and text of feedback sent from the Settings screen, together with the sending ID, app version, OS type and version, and display language. We use it to improve the Game and investigate bugs. We do not reply to feedback individually. Please do not include personal information such as your name or contact details in the text.
Data Sync save	When you use "Data Sync" in Settings, the Game sends your progress (cleared stages, materials, gear, garden, trophies, in-game name, and so on; purchase status and device settings are not included), the app version, the OS type, and the time it was saved to our server. We use it so that synced devices can use the same data, and to verify your identity if you contact us after losing a device. It is stored linked to your ID and is not shown to other users.
App version	When you browse Community Stages, the Game sends the app version. We use it to show only stages that can be played on that version.
IP address	By the nature of communication, our server receives your IP address. We store IP addresses for up to 2 days to count attempts, so that ID registration, Creation Page sign-in, Data Sync code entry, and similar actions are not performed in large numbers in a short time.

2-2. The Creation Page

Google account information	To post stages, you sign in with a Google account. We store the account identifier, email address, and display name received from Google. We use them to confirm the author, manage posts, and contact you about your posts. We do not publish your email address or identifier.
Posted content	We store the stage content, name, description, author name, and drafts. When published, the author name and the stage's name, description, and content are shown to users of the Game.
Browser storage	Your sign-in state, drafts in progress, display language, and similar data are saved in your browser (localStorage). When you are signed in, drafts are sent to our server when you press "Save" and when you close the page.

2-3. Co-op play

The information sent in each type of co-op play, and where it goes, is as follows.

Information sent during play	Your display name, class, level, gear, stage, app version, emotes (fixed pictures and words, when used), and similar. In same-network co-op it reaches devices on the same network; in online co-op it reaches only the devices of people in the same room.
Same-network (Wi-Fi) co-op	Devices on the same local network, such as the same Wi-Fi, connect directly. It does not go through our server. When finding rooms, the information above is also sent to devices on the same network. Other devices can see your device's local IP address. On iOS, the Game asks for Local Network permission for this purpose.
Online co-op	Devices in the same room connect through our relay server. The relay server only forwards game traffic and does not store its content. There are two kinds of rooms. "Private" rooms can be joined only by people who know the room code. "Public" rooms are listed in "Open Rooms" and can be joined by people you do not know. When you create or join a room, the Game sends your device ID. We use it to count how often rooms are created from the same device in a short time and to keep blocked players out. Your IP address is used only for communication while you are connected and is not recorded (except where stored for the purpose described under "IP address" in 2-1). Other players never learn your IP address.
When you make a room "Public"	The host's display name, the stage, the room's style (such as "Beginners Welcome"), the level required to join, the number of players, the app version, and the country or region estimated from the host's IP address are shown to other users in the "Open Rooms" list. We store this information on our server only while the room is recruiting. The country or region is used for display in the list and to show rooms in nearby regions first. It may differ from the actual one because of a VPN or similar, and we do not estimate any location more precise than that. When you browse the list, we also use the country or region estimated from your connection to show nearby rooms first (it is not stored).
Play with Steam Friends (Steam version)	The Game connects to your friends' devices in a Steam lobby through Valve Corporation's Steam network instead of our relay server. The information sent is the same as in other co-op play. Your Steam account ID and friend information are used within Steam when joining and inviting. These are handled under Valve Corporation's privacy policy and are not sent to our server.

2-4. Contact

When you create a contact email from the Game, the app name, version, Bundle ID, and OS type and version are included in the body. We use your email address and the content of your inquiry only to reply and investigate problems.

3. In-App Purchases

Purchases such as the "Adventure Pack" and "Garden Pack" are made through the payment systems of the App Store, Google Play, or Steam. We do not receive payment information such as credit card details. Purchases are verified on your device with each store, and purchase status is saved on your device.

4. Disclosure to Third Parties

We do not provide the information we collect to third parties except in the following cases:

• With your consent
• When required by law
• When necessary to protect a person's life, body, or property and it is difficult to obtain your consent

Note that, as described above, display names, ranking records, the author names and content of posted stages, the titles and content of posted gardens, and the information of public rooms (including the estimated country or region) are shown to other users.

5. External Services

The Game and the Creation Page use the following external services:

• Cloudflare, Inc. (United States): server operation and data storage. Collected information is stored on its services.
  https://www.cloudflare.com/privacypolicy/
• Slack Technologies, LLC (United States): internal notifications. We send feedback text and summaries of reports and post review requests (such as the target's name and the author name) so that our staff can review them. IDs are not sent.
  https://slack.com/trust/privacy/privacy-policy
• Google LLC (United States): Creation Page sign-in.
  https://policies.google.com/privacy
• Apple Inc., Google LLC, and Valve Corporation (all United States): app distribution and in-app purchases (and, for Valve Corporation, communication for co-op with Steam friends in the Steam version). Information is handled under each company's privacy policy.

The United States does not have a personal information protection system equivalent to Japan's Act on the Protection of Personal Information, but the companies above take measures to protect personal information.

6. Retention Periods

• IP addresses: up to 2 days
• Play records that did not appear in Rankings: about 1 day
• Creation Page sign-in state: up to 30 days
• Data Sync save: until it has not been used by any synced device for 180 days
• Public room information: while the room is recruiting (deleted when the room closes or stops recruiting)
• IDs, display names, ranking records, posted stages, posted gardens, garden visit and like records, co-op block records, report records, and feedback: while we provide the online features. Even after a post is unpublished, we may keep a record of it to deal with misconduct.

When we end the online features, we delete this information from our server.

7. Security

We take the necessary measures to prevent unauthorized access to, leakage of, and alteration of the information we collect, such as encrypting communication, restricting access to admin screens, and hashing authentication keys.

8. Requests for Disclosure, Correction, Deletion, etc.

If you wish to request disclosure, correction, suspension of use, or deletion of your information, please contact us at the address below. Because the Game's ID is not shown on screen, we may ask for your display name, the content of your ranking records, the email address of the Google account used on the Creation Page, or similar details to verify your identity and identify the data. We will respond without delay in accordance with the law.

Information saved on your device is erased when you delete the Game. Information in your browser from the Creation Page is erased when you sign out or clear your browser data.

9. Use by Minors

If you are a minor, please obtain your parent or guardian's consent before using the Game, setting a display name, posting stages, or making in-app purchases.

10. Changes to This Policy

We may change this Policy as necessary. We will announce important changes on this page or in the Game. The revised Policy takes effect when it is posted on this page.

11. Contact

• Business: Solutive Inc.
• Representative: Hidetoshi Shimizu, Representative Director
• Address: Disclosed without delay upon request.
• Contact: [email protected]

Please also read the Terms of Use.