Privacy Policy

MAYHEM is a non-custodial, on-chain game. We collect as little data as possible, and we never collect your name, email, or any traditional account credentials.

This policy explains what limited data the Game touches and how it is used.

When you play, the following data is processed:

• Your public wallet address, which is already public on the blockchain.
• Match data such as cards played, round results, stake amount, and final outcome, used to run the match and build the leaderboard.
• Basic technical data such as IP address and browser type, used by our hosting and to rate-limit abuse.

We never have access to your private keys, seed phrase, or wallet balance beyond what is publicly readable on-chain.

We do not collect names, email addresses, phone numbers, or government identifiers. We do not run third-party advertising trackers, and we do not sell your data to anyone.

We use your browser’s local storage for essential functionality only, such as remembering whether you have seen the "How to Play" guide and keeping you connected during a session.

We do not use advertising or cross-site tracking cookies.

To function, the Game relies on third parties that may process your wallet address or technical data:

• The blockchain networks and RPC providers, which broadcast and confirm on-chain transactions.
• Your chosen wallet provider, which signs transactions and is governed by its own privacy policy.
• Our hosting and database providers, which store match history and serve the website.

Transactions, deposits, and payouts are recorded on-chain. Blockchain data is public and permanent and cannot be edited or deleted by us or by you.

Off-chain match history and leaderboard data are retained to keep the game and rankings working. Cached live-match state is automatically expired shortly after a match ends.

MAYHEM is not directed to anyone under 18. We do not knowingly process data from minors.

We may update this policy from time to time. Material changes will be reflected by the "Last updated" date above.

Questions about privacy can be sent to privacy@mayhem.gg.