CellSnake ("the game", "we", "us") is a free browser game. We are committed to collecting as little as possible and being completely transparent about what we do collect.
1. Information we collect
Collected automatically while you play
- Random session ID — a temporary identifier generated by our multiplayer engine. Not linked to your identity; lives for a single play session.
- Display name — the name you enter (or the random one we assign). Shown publicly to other players in the arena.
- Gameplay statistics — mass, survival time, kills, deaths, respawns. Stored in server logs for aggregate analytics that help us improve the game.
- Browser user-agent — only recorded when a client-side error occurs, to help us fix device-specific bugs.
- IP address — used exclusively for short-term rate limiting (abuse protection). Held in memory for about 60 seconds, never stored with gameplay data.
Information we do NOT collect
- Real names, postal addresses, phone numbers
- Email addresses (the game has no sign-up)
- Passwords (there are no accounts)
- GPS or precise location data
- Health, financial, ethnic, religious, political or any other sensitive-category information
2. How we use the information
- Running the game — the session ID lets the server track your snake during live play.
- Aggregate analytics — gameplay logs feed statistics such as retention and session length. These are always aggregated; we don't profile individuals.
- Bug fixing — error reports with user-agent strings tell us which devices need attention.
- Abuse protection — IP-based rate limiting protects the servers from flooding.
3. Cookies and browser storage
What we store on your device
- localStorage — your best score, settings (theme, mute) and daily streak. Stays in your browser; not transmitted to our servers.
- sessionStorage — temporary in-session data, cleared when the tab closes.
- Service-worker cache — static files (scripts, images) so the game loads faster on repeat visits.
The game itself sets no tracking cookies.
Third-party advertising cookies
We display ads through Google AdSense. Google and its partners may use cookies and similar technologies to:
- Serve ads relevant to your interests (with your consent)
- Measure ad performance and prevent repeat display
Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and/or other sites on the Internet.
Visitors in the European Economic Area, the UK and Switzerland see a consent banner before any advertising cookies are set. You may opt out of personalized advertising at any time via Google Ads Settings, and learn more about how Google uses data at policies.google.com/technologies/partner-sites. You can also opt out of some third-party cookies via AdChoices or aboutads.info.
4. Sharing with third parties
- Google AdSense (Google LLC) — ad serving. See Google's Privacy Policy.
- Google Fonts — font delivery. Google receives a standard HTTP request (including IP) when fonts load; Google states Fonts requests are not used for profiling.
- Hosting provider — our game server runs on rented infrastructure. Data stays on our server; the provider has no independent access to gameplay data.
We never sell or rent your information. No data leaves our systems for marketing purposes.
5. Children's privacy (COPPA)
CellSnake is not directed at children under 13, and we do not knowingly collect personal information from them. The game requires no personal information to play. If you are a parent and believe your child has provided information covered by COPPA, contact us and we will delete it promptly.
6. Your rights
Access and deletion
- Browser data: everything stored locally is under your control — view or clear it via your browser's site-data settings.
- Server logs: to have your session entries deleted, send us your approximate play time and display name; we complete deletion requests within 30 days.
- Automatic expiry: raw gameplay logs older than 90 days are deleted on a rolling basis.
Opting out of personalized ads
Use the consent banner (EEA/UK/CH), Google Ads Settings, or YourAdChoices.
7. Security
- All traffic is encrypted with HTTPS/TLS; the game's real-time connection uses encrypted WebSockets (WSS).
- We hold no passwords or payment data — there is nothing sensitive to breach.
8. Changes to this policy
If we make material changes (for example, collecting a new category of data), we will announce them with a banner on the home page at least 14 days before they take effect. The "last updated" date above always reflects the current version.
9. Contact
Privacy questions or deletion requests: use the contact page. We respond within 5 business days.