We use Google AdSense to display ads on the site. Google may use cookies to personalize ads based on your browsing history. These cookies are only loaded after your explicit consent through the cookie banner. You can change your preference at any time by clicking "Manage cookies" in the site footer.

Google ad privacy policy ↗

MarbleCup participates in the Amazon Associates Program. Some links on the site direct to products on Amazon and may earn us a commission on qualifying purchases at no extra cost to you.

We use Google Analytics 4 to understand how the site is used and to improve the experience. We implement Google Consent Mode v2: while you have not accepted cookies, no analytics cookies are set and only anonymous, identifier-free pings are sent to Google. After your consent, Google Analytics collects data such as pages visited, click events, device type, browser, language, and approximate geographic location (country/city). We never collect personally identifiable information. You can revoke consent at any time via the "Manage cookies" link in the footer.

We use your browser's local storage (localStorage) to save your theme preference (dark/light), language, and tournament progress. This data is stored exclusively on your device and is never sent to our servers.

MarbleCup has no account system, login, or registration. We do not collect your name, email, address, or any personally identifiable information. We do not track you beyond AdSense cookies (when consented).

Under Brazil's General Data Protection Law (LGPD), you have the right to:

• Give or withdraw your consent for cookies at any time
• Know what data is stored (only localStorage items in your browser)
• Clear your data through your browser settings
• Manage cookie preferences via the link in the footer

For privacy questions, reach out at: marblecup.app@gmail.com