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HOLD THE BULWARK: The Undead Legion

Privacy Policy

Last updated: October 29, 2026

Hirayama Properties K.K. ("we", "us") sets out below how information is handled in the mobile game app "HOLD THE BULWARK" for Android and iOS (the "App").

1. Information We Collect

The App does not collect information that directly identifies you, such as your name, address, phone number, or email address. The App collects and uses the following information.

■ Information related to advertising

The App uses advertising services (such as Unity LevelPlay, Google AdMob, and Unity Ads) to show ads. These services may collect:

  • Advertising ID (Android: Google Advertising ID / iOS: Identifier for Advertisers (IDFA))
  • IP address, device type, OS version, language, and network status
  • Ad impressions, views, and clicks

On iOS, the IDFA is collected only if you choose "Allow" when asked whether the App may track your activity. All features of the App remain available if you do not allow tracking.

■ Information related to the leaderboard

The App uses Unity Gaming Services (Unity Authentication and Unity Leaderboards) for the leaderboard feature. The following information is collected and shown to other players on the leaderboard:

  • An anonymous user ID (generated automatically; it does not identify you)
  • Your player name (an automatically assigned name, or a name you set)
  • Your game score (number of enemies defeated)

Please do not enter personally identifiable information (such as your real name or contact details) as your player name.

■ Information related to in-app purchases

In-app purchases use Google Play's billing system on Android and the App Store (Apple) on iOS. Payment information (such as credit card numbers) is handled by Google or Apple, and we do not collect it. We only receive information that a purchase was completed (product and time of purchase).

■ Information stored on your device

Game progress, settings (language, battle settings, etc.), your high score, and the number of purchased items are stored on your device. They are not sent to our servers.

■ Information for improving the App

To investigate bugs, crash information may be collected through Google, Apple, or the services we use.

2. How We Use Information

We use the information to:

  • Provide, maintain, and improve the App
  • Deliver ads and measure ad performance
  • Display the leaderboard
  • Process in-app purchases
  • Investigate bugs and prevent cheating

3. Sharing with Third Parties

We do not share your information with third parties without your consent, except as required by law. The service providers above handle information in accordance with their own privacy policies:

4. Ad Personalization

You can manage ad personalization as follows:

  • Android: Reset or delete your advertising ID and opt out of ad personalization in "Settings > Google > Ads".
  • iOS: Change whether the App may track you at any time in "Settings > Privacy & Security > Tracking".

5. Children

The App is not directed to children under 13. We do not knowingly collect personal information from children under 13.

6. Data Deletion Requests

If you would like data registered to the leaderboard (anonymous ID, player name, and score) to be deleted, please contact us through the contact form in Section 9. We will respond to the extent possible. Data stored on your device is removed when you uninstall the App.

7. Security

We handle collected information with appropriate security measures.

8. Changes to This Policy

We may update this policy as necessary. Any changes take effect when posted on this page.

9. Contact