Cookie Policy

Last Updated: October 17, 2026

Introduction

This Cookie Policy explains how Hanafuda Legends uses cookies and similar storage on our website. Read it alongside our Privacy Policy.

How we ask for consent

We use a self-hosted, region-aware consent banner (not a third-party CMP). Google Analytics loads on every visit with Google Consent Mode. In the EEA, the UK, and Switzerland, analytics and ad storage stay off until you choose Accept or change Settings; Google may receive a cookieless ping so it can model traffic. Elsewhere, analytics storage is on by default and a short notice lets you turn it off in Settings. We do not run ads, so ad storage stays off unless you allow it. Your choice is stored in localStorage as hf_consent ({ analytics, ads, ts, region, source }). You can reopen Settings anytime via Cookie settings.

Cookies and storage we use

The table below lists cookies and browser storage keys found in our codebase. Google Analytics cookies are set when analytics storage is granted.

Name	Purpose	Duration	Category
hf_consent (localStorage)	Stores your analytics/ads choice, the country it was made in, and whether it came from the banner or Settings	Until cleared	Necessary
hf_cc (cookie)	Visitor country code from edge middleware (routing / regional hints)	1 hour	Necessary
hf_token / hanafuda_token (localStorage)	Signed-in session token	Until logout / cleared	Necessary
hf_user / hanafuda_user (localStorage)	Cached account profile for UI	Until logout / cleared	Necessary
hf_username (localStorage)	Display name cache	Until cleared	Necessary
hf_guest_id (localStorage)	Anonymous visitor id so a private-room session can be linked if you later create an account	Until cleared	Necessary
hanafuda_language (localStorage)	UI language preference	Until cleared	Functional
hf_theme, hf_deck, hf_card_back, hf_captured_bg (localStorage)	Appearance preferences (table, deck, card back, capture pile)	Until cleared	Functional
hf_game_speed, hf_bg_music_track, audio / overlay volume keys, hf_computer_difficulty, highlight toggles (localStorage)	Gameplay and audio preferences	Until cleared	Functional
hf_coin_launch_seen (localStorage)	Whether you dismissed the Hana Coins launch notice	Until cleared	Functional
hf_tutorial_completed, prompt “don’t show again” keys (localStorage)	Tutorial / onboarding state	Until cleared	Functional
Match / lobby keys in sessionStorage (e.g. pending invite codes, active match boot data)	Temporary multiplayer session state for the current tab	Tab session	Necessary
Socket.IO transport (io / Engine.IO)	Realtime multiplayer connection (may set a short-lived cookie depending on transport)	Session / short-lived	Necessary
_ga, _ga_* (cookies)	Google Analytics 4 — distinguish users / sessions. Set only if analytics consent is granted	Up to 2 years	Analytics
Google AdSense cookies (e.g. IDE, related Google ads cookies)	Site verification / advertising measurement. Script loads only if ads consent is granted. No ad units are rendered in-app today beyond the verification script	Up to 13 months (Google-controlled)	Advertising
Google Sign-In cookies	OAuth when you choose “Sign in with Google”	Google-controlled	Necessary (auth)

Managing cookies

On this website

Use Cookie settings to accept all, reject non-essential, or change analytics/ads toggles. Changes take effect immediately.

Browser settings

You can also clear cookies and site data in your browser. Disabling all storage may prevent login and preference persistence.

Mobile apps

Our Capacitor apps do not show the web cookie banner. Analytics can be toggled in Settings → Privacy. Mobile apps do not load AdSense.