Cookies store small pieces of data that can be sent to the server. They expire based on settings.
Session Storage saves data temporarily - only for this browser tab/session. Gone when you close the tab!
This score will disappear when you close your browser tab.
Local Storage saves data permanently - survives browser restarts, computer restarts, everything!
This score will persist even if you restart your computer.
Permanently delete ALL stored data from all storage types.