Cookies, without the tricks.
Essential storage supports your visit. Optional Google Analytics cookies require your permission.
Essential session cookie
cv_session is a first-party opaque, HttpOnly cookie linking your browser to a server-side account session or temporary guest visit. It uses SameSite=Lax. Account sessions expire after 12 hours; guest visits after two hours. Signing out clears your session. HTTPS connections use a Secure cookie.
Browser storage
cv:favourites stores guest favourites on this device and cv:motion stores your effects preference. cv:round: and cv:reminder: session-storage keys keep retry identifiers and reminder timing within this tab. The renderer also uses cv: game keys for temporary visual state. None of this storage saves a guest balance between visits.
Your control
Remove browser storage in your browser settings, or remove individual favourites using their heart buttons. Blocking the essential session cookie prevents authentication and secure game requests. Guest balances are not stored in local storage.
Optional tracking
Google Analytics is optional and starts only after you choose Allow analytics. Declining keeps it off. Storage preferences in the footer lets you change your choice; withdrawing removes this site’s accessible Google Analytics cookies. No advertising storage is enabled.
Optional measurement storage
Change or withdraw your analytics permission. See Google’s Privacy Policy for its processing information.