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Privacy Policy

Last updated: April 4, 2026

Crawlerdle is a free, fan-made daily guessing game based on the Dungeon Crawler Carl book series by Matt Dinniman. We are committed to protecting your privacy. This policy explains what data we collect, why, and how it is handled.

Summary

• We do not collect personal information (no names, emails, or accounts).
• We do not show advertisements.
• We do not sell, share, or trade any data with third parties.
• We do not track you across other websites.
• All data collection is anonymous and used solely to operate and improve the game.

Data We Collect

Data	How	Purpose	Retention
Anonymous visitor ID	First-party cookie (crawlerdle_uid)	Aggregate visitor counting (daily/monthly active users)	1 year (cookie), 90 days (server)
Anonymous user ID	Browser localStorage	Saving your game statistics across sessions	Until you clear browser data
Game state	Browser localStorage	Persisting your guesses, theme, and spoiler acknowledgment	Until you clear browser data
IP address	Server-side (not stored permanently)	Rate limiting to prevent abuse (30 requests/day)	24 hours
Error details	Automatic error reporting	Diagnosing bugs (stack traces, page URL, browser type)	7 days
Game results	Server API	Aggregate analytics (win rates, guess distribution)	90 days

Cookies

We use a single first-party cookie:

Name	Type	Duration	Purpose
crawlerdle_uid	HttpOnly, Secure, SameSite=Lax	1 year	Anonymous visitor counting. Contains a random UUID with no personal information. Cannot be read by JavaScript or third-party sites.

We do not use advertising cookies, tracking cookies, or any third-party cookies.

Third-Party Services

Vercel Analytics

We use Vercel Analytics to measure page performance (load times, web vitals). Vercel Analytics is privacy-focused: it does not use cookies, does not collect personal data, and does not track users across sites. Data is processed by Vercel.

Vercel Hosting

The site is hosted on Vercel. Vercel may process standard web server logs (IP addresses, request timestamps) as part of their hosting infrastructure.

Local Storage

We store the following data in your browser's localStorage (never sent to any server except where noted):

• Game state — your current guesses and game progress
• Anonymous user ID — a random identifier for stats persistence (also sent to our server for stats storage)
• Spoiler acknowledgment — whether you have accepted the spoiler warning
• Theme preference — your selected visual theme
• Game history — your past game results

You can clear all localStorage data at any time through your browser settings. This will reset your game statistics and preferences.

Data Security

All connections to Crawlerdle are encrypted via HTTPS. We enforce strict security headers including Content Security Policy, HSTS, and other protections. Our server-side API validates all inputs and rate-limits requests to prevent abuse.

Children's Privacy

Crawlerdle does not knowingly collect personal information from anyone, including children under 13. The game does not require accounts, and all identification is anonymous.

Your Rights

Since we do not collect personal information:

• There is no personal data to request, correct, or delete.
• You can clear your local game data at any time by clearing your browser's localStorage and cookies for this site.
• You can block the crawlerdle_uid cookie in your browser settings without affecting gameplay.

Changes to This Policy

If we make changes to this policy, we will update the "Last updated" date at the top of this page. Significant changes will be noted on the main site.

Contact

For privacy questions or concerns, contact us at crawlerdle@gmail.com.