Last updated September 28, 2026.
Practice progress stays in your browser.
The practice game uses local storage for the current puzzle, track positions, rail directions, marks, mistakes, move history and completed puzzle numbers. We do not send these saves to a server. Clearing this website’s browser data removes them. If storage is disabled, the game works for the current session.
Video playback.
Video thumbnails are served from assets.connecttracks.com through Cloudflare R2. A YouTube player is loaded only when you press the play button. Playback connects your browser to YouTube, whose own privacy terms apply. The site uses youtube-nocookie.com for embedded playback, but this does not mean playback transmits no data. Read Google’s privacy policy.
Hosting and fonts.
Cloudflare handles website and image delivery and may process routine request information, including IP addresses, for delivery and security. Fonts are served locally with this website.
Website analytics.
We use Google Analytics to understand visits and how people use this website. The Google tag connects your browser to Google and may use cookies and collect information about page visits, interactions, and your browser or device. Read Google’s privacy policy for details.
External links.
Google Play and YouTube are separate services. Information you share on those sites is governed by their policies. This site does not require an account or collect form submissions.