Privacy Policy
Effective August 31, 2026
OpenMahj is a Limestone Labs LLC product. This policy explains how we handle information when you use OpenMahj.
Information we collect
- Account information: email address, display name, account identifiers, and membership status.
- OpenMahj+ information: saved settings, game history, statistics, and other account features you choose to use.
- Payment information: Stripe collects and processes card and billing information. OpenMahj receives payment identifiers, subscription status, and limited transaction details, but not full card numbers.
- Service data: room and gameplay events needed to run a table, along with basic device, network, request, and error information generated by our hosting providers.
- Local data: the browser may store preferences, room details, and sign-in session data on your device.
How we use information
We use information to operate multiplayer games, create and secure accounts, provide membership features, process and reconcile subscriptions, restore settings, troubleshoot failures, prevent abuse, and comply with legal obligations. We do not sell personal information.
Service providers and disclosure
We share information only as needed with providers that operate the service, principally Amazon Web Services for hosting, storage, and authentication, and Stripe for billing. We may also disclose information when legally required, to protect users or the service, or as part of a business transfer.
Retention and security
We retain account information while an account remains open and as reasonably necessary for billing, security, dispute resolution, and legal compliance. Operational logs and transient game data may be retained for shorter periods. We use reasonable technical and organizational safeguards, but no online system is completely secure.
Your choices
You may play anonymously without providing an email or payment information. You may request access to, correction of, or deletion of account information through the Limestone Labs contact form. Some billing or security records may be retained where required by law or legitimate operational needs.
Children
OpenMahj is not directed to children under 13, and we do not knowingly collect personal information from anyone under 13. Contact us if you believe a child under 13 provided personal information.
Changes and contact
We may update this policy and will post material changes here with a new effective date. Privacy questions or requests may be sent through the Limestone Labs contact form.