Effective date: 23 September 2026 Applies to: the Pyatnashki game available at https://pyatnashki.com (the "Game").
This policy is written to satisfy both EU/EEA/UK requirements (GDPR / UK GDPR / ePrivacy) and US requirements (CCPA/CPRA and other state laws, CalOPPA, COPPA). Because the Game collects no personal data, the same short policy serves users in every region.
Pyatnashki is a browser game that runs entirely on your device. We do not ask for your name, email, or any personal details; we have no user accounts; and we show no advertising. Your game progress — the puzzle you have part-solved — is saved only in your own browser, and we never see a game you have not finished.
We do measure visits to the site — which pages, from where, and for how long — and section 6 says exactly what that means. By default this is done without storing anything on your device and without any identifier that connects one visit to another. A cookie notice offers you the option of allowing one, so that we can tell a returning visitor from a new one; declining changes nothing else, and ignoring it is the same as declining.
There is one thing the Game can send, and it is on unless you turn it off: a switch in Settings labelled "Send gameplay records", described in section 5. A first visit, a cleared browser and a private window all send until you say otherwise. While it is off, nothing about your play leaves your device.
The only personal data processed in connection with the Game is the technical information (such as your IP address) that our hosting provider automatically records in its server logs when your browser requests the Game's files — the same as for any website. Details below.
dcp0 Email: contact@pyatnashki.com
For any privacy question or to exercise your rights (Section 8), contact us at the email above.
To let you keep playing where you left off and to work offline, the Game stores the following in your browser using localStorage and the browser Cache API. All of it stays on your device, with one exception named in the table: the last two rows are the record of a solved puzzle waiting to be sent, and they exist only while gameplay records are switched on. Everything else is not transmitted to us or any third party:
| What | Where | Purpose |
|---|---|---|
Everything the game saves (state, theme, rules-seen, lang) | localStorage | Save and restore your game and your settings |
telemetry — only while gameplay records are switched on, and only while a puzzle is unsolved | localStorage | A puzzle in progress and any finished record not yet sent: a random game id, a counter, and the records waiting to go. It is what lets you leave a puzzle for a week and have it counted as one game rather than two. Nothing about you |
run — only while gameplay records are switched on, and only while a puzzle is unsolved | localStorage | That puzzle's moves so far, with how long each took. The board you were dealt is not copied here — state already holds the game, and the record reads the opening from it when the puzzle is solved |
dcp0.telemetry — written once you answer the records switch either way | localStorage | Your answer to "Send gameplay records", so the Game stops asking. The word yes or no and nothing else |
dcp0.session | localStorage | A random game session identifier: this game in this browser, not you and not your computer. It exists whether or not records are switched on, because the Game uses it to ask which features are switched on for it — and it is not attached to the performance reports below, which carry no identifier at all. You can reset it in Settings, which makes a new one |
| The Game's own files (HTML/JS/CSS, icons, manifest) | Cache Storage (service worker) | Offline play and fast loading |
This is functional / strictly-necessary storage for a feature you requested (playing and saving the game). See the separate Cookies & Storage Notice for detail. You can erase all of it at any time by clearing this site's data in your browser settings.
The Game's files are served by Cloudflare, Inc. (United States), from its global network — the data centre that answers you is the one nearest you, which is what makes the Game load quickly wherever it is opened. When your browser loads the Game, Cloudflare's servers automatically receive and may log standard technical data, including your IP address, browser/user-agent string, requested files, and timestamp.
(GDPR Art. 6(1)(f)).
at <https://www.cloudflare.com/privacypolicy/>.
We do not combine these logs with anything else, and we do not use them to identify you.
The Game has a switch in Settings labelled "Send gameplay records". It is on unless you turn it off, so a first visit, a cleared browser and a private window all send until you say otherwise. While it is off, nothing about your play leaves your device.
This changed on 23 September 2026. Until then Pyatnashki sent only a summary of how smoothly it ran, and this section said the Game recorded nothing about how you played. It now records a solved puzzle in the same way our other games record a finished game, and both halves are described below.
When you solve a puzzle — and also when you leave one unfinished, which is described below the list — the Game sends one record to a server we run:
took. Times are the gap between one move and the next, not clock times.
puzzle. This is a board, and it is sent deliberately: without it the list of moves describes nothing, because a slide only makes sense against the squares it started from. It is the arrangement the Game shuffled for you — it says nothing about you, and the puzzle you are part-way through is never sent.
coincidence.
dcp0.session). It identifies this gamein this browser — not you and not your computer — and it exists whether or not records are switched on, because the Game also uses it to ask which features are switched on for it. It is not derived from anything about you or your hardware: it is a random number. You can reset it in Settings, which makes a new one.
A puzzle you leave unfinished is also reported, marked as paused: when you switch away from the Game with moves on the board, the same record is sent with the slides you have made so far and nothing else added. It is sent again if you leave again having played further. This is how we can tell a puzzle somebody is still working on from one whose record went missing — without it, the two look identical to us.
Leaving is the only trigger. A puzzle sitting open in front of you is not being reported as you play, and a game you open and put down without moving a tile sends nothing at all.
While records are on, the Game also sends a summary of how smoothly it ran, at the end of a puzzle and, if you leave mid-puzzle, when you switch away from it.
It is a summary and not a recording. What it contains is:
milliseconds, how many over 34, how many over 50) and the slowest one. Not a list of frames, and nothing that says when in the puzzle they happened.
started, as typical and worst values across the whole puzzle — not per move.
positions, and never which tiles or where they were.
Hz, whether the device is in battery-saver, whether you have asked for reduced motion, and a single word for how capable it is — low, standard, high or unknown.
coincidence.
What it deliberately does NOT contain: your device's model name, its graphics-hardware name, any advertising or device identifier belonging to the platform, your exact memory or processor count, your IP address, your browser's user-agent string, or a record of any individual gesture or frame. The capability word above is worked out on your device from numbers your browser already offers to every website, and only the word is sent — never the numbers it came from. No identifier of any kind is attached, so two reports from the same device cannot be recognised as such.
Our server additionally records the two-letter country the request came from, as reported by our network provider, and the time it arrived. Your IP address is not stored: it is used to count requests against a rate limit and then dropped.
Why: this game runs on phones, laptops, tablets, handhelds and TVs, and a release that is smooth on a fast machine can be unplayable on a cheap one. There is no way to know that from here without being told, and no way to tell a slow release from a slow device without knowing which kind of device it was.
Turning it off stops it immediately and for good; there is nothing stored to delete, because these reports carry nothing that could point back to you.
Added 23 September 2026. Earlier versions of this policy said the Game used no analytics of any kind. That is no longer true, and this section says exactly what changed.
We measure visits to the website: which page you arrived on, which page you left from, roughly how long the tab was actually in front of you, the website that linked you here (its domain only — never the address of the page you were reading), any campaign tags on the link you followed, and coarse facts your browser reports about itself — browser family, operating system family, whether you are on a phone, a tablet or a desktop, whether the Game is installed, your screen and window size, your language and your time zone. Our hosting provider also tells us which country the request came from.
requires it, and it tells us a country. The address itself is not written down.
as one of a short fixed list of families, so nothing unusual about your setup can be written into our records.
The first time you visit you are offered a choice. It does not block the game, and you can ignore it for as long as you like.
linked to your name or to anything else about you; its only purpose is to let us tell a returning visitor from a new one, and to see whether people come back over several days.
never created, nothing is written to your device, and no marker connects one visit of yours to another. Everything in the list above is still measured, because measuring it stores nothing on your machine and identifies nobody.
If you allow it and later change your mind, the identifier is deleted from your browser at once — see section 11 for the browser signals that have the same effect.
Lawful basis (EU/UK). Storing and reading that identifier is done only with your consent (ePrivacy / GDPR Art. 6(1)(a)), which you may withdraw at any time. The measurement done without it stores nothing on your device and involves no personal data.
Turning it all off. The "Send gameplay records" switch in Settings governs this too. With it off, no visit is measured and nothing is sent at all — the cookie choice then makes no difference, because there is nothing to send.
optional identifier described in section 6 is used to count returning visitors on this site and for nothing else; it goes nowhere near an ad network.
sensors (aside from an optional vibration "buzz" that sends no data).
which are about the puzzle rather than about you.
Cloudflare is a United States company serving from a global network, so server-log data is processed outside the European Economic Area. Those transfers rely on the safeguards described in its privacy documentation — EU Standard Contractual Clauses and the EU-US Data Privacy Framework.
You have the rights to access, rectify, erase, restrict, object to, and port your personal data, and to lodge a complaint with a supervisory authority.
Because we hold no personal data about you ourselves, most of these rights have nothing for us to act on. In practice:
your browser to erase it.
contact@pyatnashki.com and we will help direct your request, or contact the host directly.
You may complain to your local data-protection authority. [If you name a lead authority / country, add it here.]
If you are a US resident (for example in California, Virginia, Colorado, Connecticut, Texas, or another state with a consumer-privacy law), those laws give you rights to know, access, delete, and correct personal information, to opt out of its "sale" or "sharing" and of targeted advertising, and not to be discriminated against for exercising them.
"share" personal information as those terms are defined under the CCPA/CPRA or other state laws. The optional identifier in section 6 counts returning visitors on this site and is disclosed to nobody, so there is nothing to opt out of — and we honour Global Privacy Control regardless (section 11).
opt out of selling/sharing**. Your saved game lives only in your browser; clear this site's storage to erase it.
profiling, and we do not knowingly process "sensitive personal information."
(Section 4). To make a request or ask a question, contact contact@pyatnashki.com.
Some browsers send "Do Not Track" or Global Privacy Control signals. We honour both, and they now change what happens.
If your browser sends either signal, the Game measures your visit in its anonymous form: the optional identifier described in section 6 is not created, and an identifier already stored from an earlier "allow" is deleted. The signal overrides a stored "allow" — a signal you are sending today is a more recent answer than a button you pressed last month.
We publish this commitment in machine-readable form at https://pyatnashki.com/.well-known/gpc.json.
We do not "sell" or "share" personal information as those terms are defined under the CCPA/CPRA, so there is nothing further for these signals to switch off.
The Game is a casual puzzle for general audiences. It is not directed to children under 13, and because it collects no personal information from anyone, it does not knowingly collect personal information from children under 13 (COPPA) or under 16. The Game provides no way to submit personal information; if you nonetheless believe a child has done so, contact contact@pyatnashki.com and we will address it.
If the Game changes in a way that affects data processing (for example, if analytics or accounts are ever added), we will update this policy and its effective date before that change takes effect.
dcp0 — contact@pyatnashki.com