Support

Need help with Sudoku Royale? Check the common questions below or reach out to us directly.

Contact us

Email support@sudoku-royale.com and we will get back to you within a few days.

Frequently asked questions

How do I delete my account?

Send an email to support@sudoku-royale.com with the subject line "Delete my account". Include the username shown in your profile so we can find your account. We will delete all your data within 30 days.

How does multiplayer work?

Sudoku Royale offers three game modes. In Battle Royale, up to 10 players compete across three rounds of sudoku, and the lowest scorers are eliminated between rounds. In Duel, two players go head to head in a single round. In Practice, you play solo against the clock with no opponents. If not enough players join a multiplayer match, bots fill the remaining slots after a short wait.

How is my rating calculated?

Your rating starts at 1500 and adjusts after each ranked match. Under the hood we use Glicko-2, a proven rating system also used by Lichess and other competitive platforms. It factors in your finish position, the ratings of your opponents, and how confident the system is in your current rating. Winning against higher-rated players earns more points than winning against lower-rated players.

Do I need an email to play?

No. Accounts are created automatically using a random device identifier when you first open the app. No email, password, or sign-up form is required.

Can I play offline?

No. Sudoku Royale is an online multiplayer game and requires an internet connection to play all modes, including Practice.

Is the game free?

Yes. Sudoku Royale is free to play with no ads and no in-app purchases.

What data do you collect?

We collect the minimum needed to run the game: a device-generated account ID, your chosen username, gameplay stats, and an optional push notification token. We do not collect your email, location, contacts, or any data from other apps. See our Privacy Policy for full details.