Privacy Policy

1. Introduction

Ephileo ("we", "our", or "us") built Chain Reaction to be played, not to collect your data. There are no accounts to create, no profiles to fill in, and the game never asks for your name, email address, or contact details. This policy explains the small amount of data the game does handle and why.

2. Information We Collect

Anonymous Identifier

When you play online, the game signs you in anonymously using Firebase Authentication. This creates a random identifier that is not linked to your name, email, phone number, or any other personal information. It exists only so the game can tell players in a room apart.

Online Game Data

Online rooms relay short-lived gameplay data through Firebase Realtime Database: the 4-letter room code, which anonymous players are seated in the room, and the moves played. This data exists to run the game session and is not used to identify you.

Usage Analytics

We use Firebase Analytics to understand how the game is used in aggregate — for example how many games are played or how often online rooms are created. This data is not linked to your identity.

Data Stored on Your Device

Your preferences — AI difficulty, haptics, animation and undo settings — are stored only on your device and never leave it.

3. How We Use Information

• Run online multiplayer rooms and keep games in sync between players
• Understand aggregate usage so we can improve the game
• Detect and fix crashes, bugs, and abuse

4. What We Don't Do

• We do not sell, trade, or rent any data to third parties
• We do not show ads or use advertising trackers
• We do not collect your name, email, contacts, photos, or location
• We do not build profiles of players

5. Service Providers

Chain Reaction uses Google Firebase (Authentication, Realtime Database, and Analytics) to power online play and analytics. Firebase processes the data described above on our behalf. You can read about Google's practices in the Firebase Privacy documentation.

6. If You Contact Us

If you reach out for support, we will receive whatever you include in your message — such as your name and email address — and we use it only to respond to you.

7. Data Security and Retention

Data in transit is encrypted using HTTPS/TLS. Online room data is transient and is removed or overwritten as rooms end and new games are played. Aggregated analytics are retained per Firebase's standard retention settings. No method of transmission or storage is 100% secure, but the game is designed to hold as little data as possible in the first place.

8. Children's Privacy

Chain Reaction is suitable for all ages and does not knowingly collect personal information from anyone, including children under 13. Online play uses only the anonymous identifier described above.

9. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last updated" date.

10. Contact Us

If you have any questions about this Privacy Policy, contact us at admin@phileo.us.