Twinstar: Mirror Comets

Privacy Policy

Twinstar: Mirror Comets is a mobile game published by Twinstar: Mirror Comets Games. 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. 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 (leaderboards) 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.
• Advertising ID — a resettable, device-level identifier provided by your operating system. It is used by Google AdMob to serve advertisements inside the game and, with your explicit consent, to personalize those advertisements. You can reset this identifier or opt out of personalized advertising at any time from your device settings (on Android: Settings → Google → Ads).
• 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. 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 (an anonymous, temporary session identifier and the connection details), which is deleted once the match connects. No score, purchase, or account data is involved in multiplayer, and no gameplay data is stored on our servers. This feature is used only when you start an online match.
• Cloud save (game progress) — 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.

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. 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 — provides crash reporting and game distribution infrastructure. See Google's privacy policy.
• Google Play Games Services — optional sign-in, global leaderboards, and cloud save (Saved Games / Snapshots). Governed by the Google Privacy Policy.
• Google Firebase — used only to coordinate the connection handshake for online multiplayer (temporary anonymous session and connection details, deleted on connect). 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.

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

Because we do not store user data on our own servers, there is nothing for us to retain or delete on your behalf. To remove all game data from your device, uninstall the application. 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). The multiplayer connection handshake is deleted automatically once a match connects and is not retained. To reset the Advertising ID, use your device settings as described above. For data held by Google (AdMob, Play Services, Firebase), please refer to Google's data & privacy controls.

Game progress and responsibility

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

Because saving and syncing depend on Google Play services, your device, and 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, clearing app data, or interruptions to Google services. The game is provided "as is", without warranty of any kind. We strongly recommend signing in to Google Play Games so your progress is backed up to your Google account.

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.