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Here you choose which optional storage Sudoku Flags may use on this device. The necessary part always stays on, because the site cannot work without it. The rest you can change at any time. Your choice is kept in this browser, so a new visit does not ask again.

Language, sign-in, your progress on this device and the timer that stops the same ad from repeating too often. These are needed for the game to work, so there is no switch for them. The full list is in the Cookie Policy.

• Analytics. Anonymous measurements that tell us which pages are used. Not in use yet.
• Advertising. Storage that advertising partners use to show ads and to measure them. Not in use yet. It will be switched on together with the first advertising partner, and this page will then say so.

A category that is not in use has nothing behind its switch, so it changes nothing. We will not start a category without telling you here first.

Save your choice above, or clear the site data in your browser to start again. Every browser also lets you block cookies entirely. Blocking the necessary storage stops the game from remembering your progress and sign-in.

Questions about how we use data: write to us through the feedback form, or read the Privacy Policy.