Twinstar: Mirror Comets

Privacy Policy

Twinstar: Mirror Comets is a mobile game published by Twinstar: Mirror Comets Games, available on both Android and iOS under the same package/bundle identifier, com.twinstar.app. The core game is designed to be playable fully offline, and we operate no game servers that store your personal data. Optional features — online 1 v 1 multiplayer and cloud save — rely on Google and a network-relay provider, and are described below. Cloud save itself is available on Android only in this version; see "Game progress and responsibility" below for how iOS differs. This page covers the limited categories of data processed by the third-party services we integrate with, what they are used for, and how to opt out.

Data we collect

• Google Play Games Services (Android — leaderboards) On Android, if you choose to sign in to Google Play Games, Google processes your Play Games player ID, your gamer profile (such as your display name), and the game scores you submit, in order to provide global leaderboards. This data is handled by Google, not by us — we never receive your Google account email or password. Only your score is submitted; your local game progress (stars, skins) is not uploaded. Signing in is optional, and the game is fully playable without it.
• Apple Game Center (iOS — leaderboards) — if you choose to sign in to Game Center, Apple processes your Game Center player ID, your display name, and the game scores you submit, in order to provide leaderboards. This data is handled by Apple, not by us. Game Center is used for leaderboards only — on iOS your in-game progress is not backed up to the cloud (see "Game progress and responsibility" below). Signing in is optional, and the game is fully playable without it.
• Advertising ID / IDFA — a resettable, device-level identifier provided by your operating system: the Advertising ID on Android, the IDFA on iOS. It is used by Google AdMob to serve advertisements inside the game and, with your explicit consent, to personalize those advertisements. On Android you can reset this identifier or opt out of personalized advertising at any time from your device settings (Settings → Google → Ads). On iOS, using the IDFA for tracking requires your permission via Apple's App Tracking Transparency prompt — see App Tracking Transparency (iOS) below.
• Crash and performance reports — when the game crashes or behaves abnormally, anonymous diagnostic data (device model, OS version, stack traces) may be sent to Google Play Console (Android) or Apple App Store Connect (iOS). We use this data exclusively to improve game stability. It cannot be used to identify you.
• Online multiplayer (IP address & connection data) — if you choose to play an online 1 v 1 match, your device establishes a direct peer-to-peer connection with your opponent's device using WebRTC. To set up that connection, your public IP address and network "candidate" information are exchanged with the other player and processed by connection-helper servers (Google STUN and a third-party TURN relay provider, such as Open Relay or ExpressTURN). When a direct connection is not possible, gameplay traffic is relayed through the TURN provider. We use Google Firebase only to coordinate the initial handshake: it holds the connection details, which are deleted once the match connects, and an anonymous account created for that online session. The account carries no name, email or other personal details. From version 2.1.37 the app deletes it when you leave the online session; if it cannot (for example, the app was closed or offline), it retries at a later launch and gives up after 30 days, or sooner if several such accounts are waiting, and an account it gives up on can stay in our Firebase project. Until then a small record of that account stays on your device only. No score or purchase data is involved in multiplayer, and we run no game servers of our own. This feature is used only when you start or join an online match.
• Cloud save (game progress) — Android only — if you are signed in to Google Play Games, your in-game progress (best scores, unlocked and owned skins, star balance, and settings) is saved to Google Play Games "Saved Games" (Snapshots), tied to your Google account, so it survives reinstalls and syncs across your devices. This data is stored by Google, not by us. Cloud save is disabled if you do not sign in to Google Play Games; in that case progress is kept only on your device. This feature is not available on iOS in this version — see "Game progress and responsibility" below.

App Tracking Transparency (iOS)

On iOS, the game asks for your permission before Google AdMob is allowed to use your device's advertising identifier (the IDFA) to track you across apps and websites owned by other companies. This is Apple's standard App Tracking Transparency prompt, and how you respond is entirely your choice.

• If you allow tracking, AdMob may use the IDFA to personalize the ads you see inside the game and to measure how those ads perform.
• If you ask the app not to track, no IDFA is used for tracking. You still see ads, but they are not personalized. Nothing else in the game changes.
• You can change your choice at any time in iOS Settings → Privacy & Security → Tracking.

The tracking itself is carried out by Google AdMob, not by us: we operate no advertising or analytics infrastructure of our own, we never receive or store tracking data, and we never sell it.

Data we do not collect

We do not collect names, email addresses, phone numbers, precise (GPS) location, photos, contacts, microphone or camera input, or any similar personally identifiable information. We do not receive your Google account email or password, nor your Apple ID or Game Center credentials. The only network identifier involved is your IP address, and only during an online multiplayer match as described above — it is used solely to establish the connection and is not stored by us. The game does not require an account and the single-player experience is fully functional offline (advertisements aside).

Third-party services

• Google AdMob — serves advertisements inside the game. See Google's ad technologies policy.
• Google User Messaging Platform (UMP) — presents a consent form for personalized advertising in regions where required (EU, EEA, UK, Switzerland, and others). Your choice is stored on-device and respected by AdMob.
• Google Play Services (Android) — provides crash reporting and game distribution infrastructure. See Google's privacy policy.
• Google Play Games Services (Android) — optional sign-in, global leaderboards, and cloud save (Saved Games / Snapshots). Governed by the Google Privacy Policy.
• Google Play In-App Review (Android) — may show Google Play's own rating dialog. Your rating goes to Google Play; we never see who rated. See Google's privacy policy.
• Google Play In-App Updates (Android) — lets Google Play offer an app update. See Google's privacy policy.
• Google Firebase — used only to coordinate the connection handshake for online multiplayer (connection details, deleted once the match connects, and an anonymous account for that online session, which the app deletes when you leave it, as described above). See Firebase's privacy and security information.
• TURN relay (network relay) — a third-party STUN/TURN provider (such as Open Relay or ExpressTURN) that helps establish, and where necessary relays, the peer-to-peer connection between players during an online match.
• Apple (Game Center / App Store Connect) — provides leaderboards and crash reporting on iOS. See Apple's privacy policy.

Children

Twinstar: Mirror Comets is not directed at children under the age of 13 (or the equivalent minimum age in your jurisdiction). We do not knowingly collect or process data from children. If you believe a child has provided us with information through one of the third-party services above, please contact us and we will work with the relevant service to address it.

Data retention and deletion

We run no servers of our own. Apart from the anonymous online account described below, which the app deletes itself, there is nothing for us to retain or delete on your behalf. To remove all game data from your device, uninstall the application. On Android, cloud-saved progress and leaderboard data are held by Google Play Games and can be deleted from your Google Play Games settings (delete game data). On iOS, leaderboard data (your Game Center player ID, display name, and scores) is held by Apple under your Apple ID; because this version has no cloud save on iOS, there is no cloud-saved progress to delete beyond uninstalling the app. The multiplayer connection details are deleted automatically once a match connects, and from version 2.1.37 the anonymous online account is deleted when you leave the online session (retried at a later launch for up to 30 days if needed). To reset the Advertising ID (Android) or change your tracking choice (iOS), use your device settings as described above. For data held by Google (AdMob, Play Services, Firebase), please refer to Google's data & privacy controls; for data held by Apple (Game Center, App Store Connect), please refer to Apple's privacy policy.

Game progress and responsibility

Your in-game progress — including stars, scores, and unlocked or purchased skins — is stored on your device. On Android, when you are signed in to Google Play Games, it is also backed up to your Google account via Google Play Games "Saved Games" (Snapshots); this backup is provided and controlled entirely by Google Play Games, and we do not run our own progress servers. We strongly recommend signing in to Google Play Games on Android so your progress is backed up.

On iOS, this version of the game stores your progress on your device only — there is no cloud backup. Uninstalling the game, switching devices, or losing your device will permanently lose your in-game progress, with nothing to restore it from.

Because saving and syncing, where available, depend on your platform's services, your device, and (on Android) your Google account, we cannot guarantee that progress will never be lost. To the maximum extent permitted by law, we accept no responsibility or liability for any loss, reset, or corruption of stars, scores, skins, or other in-game progress — including, without limitation, cases caused by reinstalling the game, switching or resetting devices, signing out of Google Play Games on Android, clearing app data, or interruptions to platform services. The game is provided "as is", without warranty of any kind.

Changes to this policy

If we make material changes to how the game handles data, we will update this page and revise the "Last updated" date above. We encourage you to review this policy periodically.

Contact

For questions about this Privacy Policy or data handling in Twinstar: Mirror Comets, contact us at twinstarmirrorcommets@gmail.com.