Privacy notice
Prism Breaker collects no personal data, transmits no personal data, and has no account system,
no login, no advertising and no cookie-based tracking. Everything the game remembers is written
to your own browser's localStorage on your own device. This page lists every key by
name so you can verify it yourself in your browser's developer tools.
Last updated: August 21, 2026. This notice is written for readers in the United States and Canada.
What is stored in localStorage
These four keys are the complete list. Nothing else is written, and none of it ever leaves your device.
| Key | What it holds | Example value |
|---|---|---|
pb.tier.v1 |
The difficulty tier you last selected, so the picker opens on your choice next time. | standard |
pb.best.v1 |
Your best score, tracked separately for each of the five tiers. | {"standard":18400,"brutal":9250} |
pb.level.v1 |
The highest level number you have reached, tracked separately for each tier. | {"standard":14} |
pb.muted.v1 |
Whether game sound is muted. Sound is off by default. | 1 |
What is not stored
- No name, email address, phone number, postal address or date of birth.
- No account, password or authentication token — the game has no sign-in.
- No cookies of any kind, first-party or third-party.
- No advertising identifier, fingerprint, or cross-site tracking pixel.
- No precise location. No contacts, photos, microphone or camera access.
- No gameplay recording, replay upload, or leaderboard submission.
What leaves your device
Two things, and neither one identifies you. First, your browser downloads the page, the
stylesheet, the game script and the level data on your first visit — ordinary web requests,
after which a service worker caches everything and the game runs offline. Second, if anonymous
performance monitoring is enabled on this deployment, your browser reports aggregate page-load
timings, JavaScript error messages, and a single coarse traffic-channel label
(search, social, ai_referral or direct)
derived from the referring page and any UTM parameters in the address bar. That report contains
no identifier for you, no game data, and no contents of localStorage. Gameplay itself makes no
network requests at all.
Children
The Sprout tier is designed for young children, and the game is safe for them by construction: there is nothing to buy, nothing to sign up for, no chat, no user-generated content, no external links inside the playfield, and no personal information is requested or collected from anyone of any age. Because no personal information is collected, there is nothing to obtain parental consent for under the Children's Online Privacy Protection Act.
Deleting your data
Clear this site's data in your browser settings, or run
localStorage.clear() in the developer console on this page. That permanently erases
your best scores and level progress. There is no server-side copy to request, correct or delete,
because none was ever created. Since the data lives only in one browser on one device, using a
different browser, a different device, or a private window starts you at zero.
Your rights
Residents of California, Colorado, Connecticut, Virginia and other US states with consumer privacy laws have rights to access, correct, delete and port their personal information, and to opt out of its sale or sharing. Prism Breaker does not collect, sell or share personal information, so there is nothing held about you to access or delete, and no sale or sharing to opt out of. The same holds for Canadian visitors under PIPEDA.
Changes
If this notice ever changes, the updated date at the top of the page changes with it. Any day-boundary calculation used anywhere on this site rolls over at midnight in the America/New_York time zone.