Cookies and local storage
A cookie is a small text file a website asks your browser to keep and send back on later visits. Local storage is a similar space in your browser that a page can write to and read from, but which is never sent to any server. This site uses cookies mainly for Google's analytics and advertising services, and local storage for the games themselves.
Nothing stored by the games identifies you. A saved case is a case number and a set of marks on a grid.
What the games save
Each game keeps its own small records in your browser's local storage so that an unfinished case survives a reload and your settings persist. These records never leave your device.
| Record | Example | Why |
|---|---|---|
| Current case | The case number (seed) and rank you were playing | Reopening the same case when you return. |
| Marks and notes | Which squares you have crossed, filled or pencilled | Not losing your work on a reload. |
| Cases cracked | A count per game | The tally shown beside the New case button. |
| Settings | Your chosen rank, board size or opponent level | Starting where you left off. |
| Recent cases | A short list of recent case numbers | Avoiding repeats when you ask for a new case. |
Most of these keys begin with dp: followed by the game's name. If your browser blocks local storage, the games still work; they simply forget the case when you leave.
Change your choices
If the consent notice was shown to you, you can reopen it here and allow or refuse analytics and advertising cookies again at any time.
You can also control Google's advertising directly through Google ad settings, and opt out of personalised advertising across many companies at Your Online Choices (UK and Europe) or aboutads.info (United States). Google explains its own cookies on its cookies page.
Every browser also lets you block or delete cookies for a single site or for all sites. Look under Privacy, or Site settings, in your browser's settings menu. Blocking all cookies does not stop the games working.
Clear saved progress
To wipe what the games have saved, clear this site's data in your browser (usually under Privacy, then Site data or Cookies and site data, then search for detective-puzzles.com). This removes your unfinished cases, your cases-cracked tallies and your settings along with any cookies. The next case you open starts from a clean desk.
Something not listed here?If you spot a cookie this page does not describe, tell us and we will either explain it or remove it.
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