THE ARCADE, EXPLAINED
Cookies and browser storage
Only storage needed for this implementation is included. There is no optional analytics banner pretending to enable a tracker.
Necessary session cookie
arcade043 is an opaque session identifier, HttpOnly and SameSite=Lax, scoped to this installation. It is marked Secure when PHP recognises HTTPS. Account authentication expires after twelve hours. Expired server files follow PHP cleanup. Blocking the cookie prevents registration, login and game state.
Browser storage
arcade043:favourites stores guest favourites and arcade043:motion stores the reduced-effects choice. sessionStorage entries starting arcade043:pending: hold pending round requests in this tab for bounded retry recovery. They are cleared on account changes and successful recovery. Neither location is an authoritative credit balance.
Your choices
Remove favourites with their buttons or clear site storage in browser settings. Clearing storage or changing browsers is not an identity-wide exclusion or a way to preserve a guest balance. The website does not load Google Analytics or advertising storage.