Cookie policy
Draft: under review by legal counsel; the data controller will be named before public launch.
Cookies are small files a website stores in your browser. We also use browser storage (localStorage), which works in a similar way. This page lists what we use and how you can control it.
What we use
1. Necessary (always on)
Required for the website and game to work; no consent needed.
| Name | Type | Purpose | Lifetime |
|---|---|---|---|
vdopa_rt |
Cookie (httpOnly) | Keeps you securely logged in | 30 days |
vdopa_oauth |
Cookie (httpOnly) | Protects Google / LINE / Facebook / Apple sign-in against forgery | 10 minutes |
vdopa.consent |
localStorage | Remembers your cookie choice | Until you change it |
vdopa.lang |
localStorage | Remembers your language | Until you change it |
vdopa.progress.*, vdopa.queue.* |
localStorage | Local copy of progress and results waiting to upload when offline | Until you clear your browser data |
2. Analytics (consent required)
If enabled, we use Google Analytics to see overall usage such as visitor numbers and popular pages. Cookies may include _ga and _ga_* (up to 2 years).
3. Advertising (consent required for personalised ads)
Content pages show ads from Google AdSense. With your consent Google may use cookies to show ads based on your interests; without it, only non-personalised ads are shown. The game at /play/ shows no ads while you solve puzzles.
Google Consent Mode
We use Google Consent Mode v2 with analytics and advertising storage denied by default until you choose in the cookie banner.
Changing your settings
- Use the “Cookie settings” link at the bottom of every page to change your choice at any time.
- Delete cookies and site data in your browser settings (deleting necessary cookies logs you out).
- Manage Google ads at adssettings.google.com.
More about personal data in the privacy policy.