Privacy Policy

Last updated: May 2026

Welcome to Bitcoin Tetris Party (https://bitcointetris.vercel.app). We are committed to protecting your privacy. This page explains what data we collect, how we use third-party services, and how we ensure a safe, educational experience for all players.

1. Data We Collect

We believe in absolute data privacy. This website is a serverless client-side application:

• No Personal Information: We do not require accounts, registration, email addresses, or log-ins. We do not collect or store any of your personal data on any server.
• Local Storage: Your chosen player name, setting preferences (sound/haptics), and non-sensitive gameplay statistics (e.g., tickets generated, lines cleared) are stored locally in your browser's localStorage. This data never leaves your device.

2. Third-Party Advertising (Google AdSense)

This website displays advertisements served by Google AdSense to support the project. Therefore, we comply with Google’s privacy requirements:

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet.
• You may opt out of personalized advertising by visiting Google Ads Settings.

3. Cookies

Cookies are small text files placed on your device to analyze web traffic and customize your experience. Other than standard third-party advertising cookies used by Google AdSense, this website does not place proprietary tracking cookies on your device.

4. Educational & Mnemonic Safety

Bitcoin Tetris Party is purely an educational game demonstrating cryptography and probability. It is absolutely secure:

• This game never asks for, handles, or saves real Bitcoin private keys, seed phrases, or mnemonics.
• Any simulated 12-word or 24-word seed phrases generated during gameplay are created purely locally in your browser using secure cryptographic entropy (crypto.getRandomValues) and are utilized solely to demonstrate that the chance of guessing an active wallet is zero.

5. Changes to This Policy

We may update this Privacy Policy from time to time. Any updates will be posted directly on this page with an updated revision date.

6. Contact Us

If you have any questions about this Privacy Policy, you can reach out via Bithope community platforms or by visiting our main project portal at bithope.app.