Nothing at all. The whole game runs inside your browser. There is no account to make, no server to talk to, and nothing about you is ever sent anywhere.

Your name, your warband, your diamonds and your battle record live in this browser's own storage on this device. Nobody else can read them, and they never leave the machine you are playing on.

If you arrived here through a game portal, that portal runs its own ads, cookies and visit counting under its own policy. Whatever happens outside this page belongs to them, so read their privacy policy for that part.

Clearing this browser's site data wipes the save and everything in it. That happens at once and cannot be undone, because there is no copy anywhere else for anyone to restore from.