Last updated: October 27, 2026.
Who we are
Marble Run Xtreme shares family marble builds and challenges. Contact us at hello@marblerunxtreme.com with privacy questions or a deletion request.
Weekly challenge emails
When you sign up, we collect an adult subscriber's email address and record their confirmation and subscription preferences. We use these to send the weekly challenge, recent YouTube builds, and occasional related kit recommendations. Confirm your address using the email we send before weekly messages begin.
Unsubscribe and deletion
Each newsletter includes an unsubscribe link. You can also contact us to request deletion. We may keep a minimal opt-out record so we do not accidentally add you back. Email confirmation and unsubscribe preferences are managed by Kit.
Service providers and security
This website is hosted on Amazon Web Services. Kit manages email subscriptions, confirmation, preferences and delivery. We do not sell subscriber email addresses. Technical request data may be processed to prevent abuse and troubleshoot the site, with short retention for operational logs. Our email provider may process delivery and engagement information to operate the newsletter.
Cookies, video links, and external sites
This site uses session storage to remember when you dismiss the challenge invitation and to estimate visits during your browser session. Anonymous statistics count each page once per session per day. The statistics do not store email addresses, IP addresses, full URLs or browser fingerprints; daily identifiers expire after 35 days. We honor Do Not Track and Global Privacy Control signals for these counts. It does not add advertising trackers. YouTube thumbnails may load from YouTube, and following external links takes you to that platform's privacy practices.
For adults building with kids
The email signup is for parents and adult builders. We do not ask children for their names, ages, photos, or contact details. Please use an adult's email address.
Affiliate links
If we add affiliate kit links, we identify them near the recommendation. We may earn a commission when a purchase is made through one of those links.