Privacy Policy

Mesmur: Lands of Myth & Magic · Last updated October 9, 2026

Mesmur LLC (“we”, “us”) makes Mesmur: Lands of Myth & Magic (“the game”). This policy explains what information the game collects, how we use it and the choices you have. Questions? Email mesmurapp@gmail.com.

What we collect

• A player ID. When you first open the game, we create an anonymous account for you with a random ID so your progress can be saved. You do not need to give us your name or email to play.
• Your email address and password, if you create an account. This is optional and lets you keep your progress across devices. Passwords are handled by Google Firebase Authentication; we never see them in readable form.
• Game data. Your progress, currencies, heroes, avatars, ranks, match results and the armies you build.
• Your display name and avatar, if you choose them.
• How you use the game. We may record how you play and use the game, such as the screens and features you use, the choices you make in runs and matches, how long you play and how the game performs on your device. This is linked to your player ID.
• Crash and error reports. If the game crashes or runs into an error, Firebase Crashlytics sends a report with the error message and where in the game’s code it happened, along with your device model, operating system version, the game’s version and a random installation identifier. Each report also includes your player ID, the user ID shown in the game’s Profile, so we can trace a problem to the affected account.
• App integrity checks. To protect the game from cheating and abuse, Firebase App Check confirms that requests come from the genuine game, using Apple App Attest or DeviceCheck on iOS and Google Play Integrity on Android.

What we don’t do

• We don’t show ads. The game doesn’t include Google Analytics or any advertising or ad-tracking tools, and it doesn’t collect your device’s advertising ID.
• We don’t sell your information, and we don’t track you across other companies’ apps or websites.
• We don’t access your location, contacts, photos, camera or microphone.

What other players can see

Mesmur is a multiplayer game. Other players can see your display name, your avatar, your ranks and standings, and the armies you build, which are used as opponents in other players’ matches.

How we use information

• To run the game, save your progress and restore it when you sign in.
• To match you against other players’ armies and keep rankings and standings.
• To understand how the game is played and improve it, for example to balance heroes and levels, fix confusing screens and make the game run better.
• To find and fix crashes and bugs.
• To prevent cheating, fraud and abuse.
• To answer you when you contact us.

Where your information is stored

Game data is stored with Google Firebase (Google Cloud) on servers in the United States. Google processes it on our behalf as our service provider and does not use it for its own purposes.

How long we keep it, and what deleting your account removes and keeps

We keep your account and game data while your account exists. Crash and error reports are kept for a limited period under Firebase Crashlytics’ retention settings, and our server logs, which can include your player ID, are kept for a limited period under Google Cloud’s log retention.

When you delete your account in the game, or ask us to by email, we delete:

• your sign-in: your email address and password, or your guest sign-in;
• your profile: your display name and avatar;
• your progress: heroes, avatars, currencies, trophies, level progress, Ranked standing and unclaimed rewards.

Your armies are no longer chosen as opponents in Ranked. If you hold a King of the Hill hill, your army keeps defending it as “Deleted player” until another player takes it or the week ends.

Some records stay, because other players’ matches, standings and rewards depend on them. They are linked to your random player ID, not to your email address:

• records of the Ranked matches and King of the Hill attacks you played, including the armies you built in them and a copy of your progress and rewards at the time of each match, and records of matches other players played against your armies;
• King of the Hill standings, hill holdings and attack history from weeks you played, with your display name and avatar replaced by “Deleted player” and a default avatar;
• a note that your player ID was deleted, so it can’t be used to play again.

Some of our internal server records of King of the Hill play, yours and other players’, still contain the display name and avatar you had at the time. Copies of your display name in other players’ recent Ranked match records are removed automatically about a week after those matches. Crash and error reports and server logs that were already recorded aren’t removed when you delete your account; they expire under the retention periods above. Game data stored on your device is removed when you uninstall the game.

Your choices

• Delete your account. In the game, go to Profile › Account, tap the waste-bin icon in the lower-right corner and confirm twice. This deletes your sign-in, profile and progress, whether you play as a guest or with an email account; see what deleting your account removes and keeps. You can also email mesmurapp@gmail.com from the address on your account, or include the user ID shown in the game’s Profile, and we will delete it for you.
• Access or correct your data. Email us and we will help.
• Change your display name or avatar at any time in the game’s Profile.

Depending on where you live, you may have additional rights under laws such as the GDPR or CCPA. Contact us to use them.

Children

The game is not directed to children under 13, and we do not knowingly collect personal information from them. If you believe a child under 13 has given us information, email us and we will delete it.

Security

Information is sent to our servers over encrypted connections (HTTPS) and protected by Firebase’s security rules. No system is perfectly secure, but we work to protect your information.

Changes to this policy

We may update this policy as the game changes. We will post the new version on this page and update the date above.

Contact

Mesmur LLC · mesmurapp@gmail.com