Is Mastermind Arena free to play?

Yes! Mastermind Arena is completely free to play. No subscriptions, no ads, no hidden costs. Just pure puzzle gaming fun.

Can I play Mastermind with friends online?

Absolutely! You can play 2 player Mastermind matches, create private groups, and compete in multiplayer tournaments with your friends.

Do I need to download anything to play?

No download required! Play Mastermind directly in your web browser on any device - desktop, tablet, or mobile phone.

What is Mastermind game?

Mastermind is a classic code-breaking logic puzzle game where you try to guess a secret color combination. Use logic and deduction to crack the code in the fewest attempts possible.

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Privacy Policy

Last updated: January 2025

1. Introduction

Welcome to Mastermind Arena. We respect your privacy and are committed to protecting your personal data. This privacy policy explains how we collect, use, and safeguard your information when you use our online puzzle game platform.

2. Information We Collect

2.1 Account Information

When you create an account, we collect:

Email address
Nickname (username)
Selected emoji avatar
Authentication provider information (if using Google or GitHub login)

2.2 Game Data

We collect data related to your gameplay:

Game results, scores, and statistics
Daily challenge participation and streaks
Leaderboard rankings and achievements
Race results and opponent interactions
Points, rewards, and progression data

2.3 Social Features Data

If you use our social features, we collect:

Chat messages in global chat and private groups
Group memberships and interactions
Player mentions and notifications
Online status and activity timestamps

2.4 Automatically Collected Information

We automatically collect:

Browser type and version
Device information
IP address and location data (approximate)
Usage patterns and session information

3. How We Use Your Information

We use your data to:

Provide and maintain the game service
Create and manage your user account
Track your game progress, statistics, and achievements
Enable multiplayer features and matchmaking
Display leaderboards and rankings
Send notifications about challenges, mentions, and game events
Improve game balance and user experience
Prevent cheating, abuse, and policy violations
Communicate important updates and announcements
Analyze usage patterns to improve our service

4. Data Sharing and Disclosure

4.1 Public Information: Your nickname, emoji, points, leaderboard rankings, and game statistics are publicly visible to other players.

4.2 Third-Party Services: We use trusted third-party services:

Supabase: Database and authentication services
Vercel: Hosting and analytics
Google/GitHub: OAuth authentication (if you choose to use these login methods)

4.3 Legal Requirements: We may disclose your information if required by law, court order, or to protect our rights and safety.

4.4 No Sale of Data: We do not sell your personal information to third parties.

5. Data Security

We implement appropriate technical and organizational security measures to protect your data from unauthorized access, alteration, disclosure, or destruction. However, no internet transmission is 100% secure, and we cannot guarantee absolute security.

6. Data Retention

We retain your account information and game data for as long as your account is active. If you delete your account, we will remove your personal data, though some anonymized statistics may be retained for analytical purposes.

7. Your Rights

You have the right to:

Access your personal data
Correct inaccurate data
Request deletion of your account and data
Object to certain data processing
Export your data in a portable format

To exercise these rights, please contact us.

8. Cookies and Local Storage

We use cookies and browser local storage to maintain your login session, remember your preferences (like theme settings), and improve your user experience. You can control cookies through your browser settings, but disabling them may affect functionality.

9. Children's Privacy

Our service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal data, please contact us.

10. International Data Transfers

Your data may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place to protect your data in accordance with this privacy policy.

11. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of significant changes via email or platform announcement. Your continued use of the service after changes constitutes acceptance of the updated policy.

12. Contact Us

If you have questions about this Privacy Policy or how we handle your data, please contact us.

Summary

We collect your email, nickname, and gameplay data to provide our service. Your game statistics and rankings are public. We use secure third-party services (Supabase, Vercel) to host and protect your data. We do not sell your information. You can request access to or deletion of your data at any time.