The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
ColorTangle contains 50 color-based knot puzzles. Your goal is to untangle the puzzle, leaving no wires crossed. Click and drag the nodes to slide them around on the puzzle board--a node may pass through any similarly colored wire. White nodes and wires may pass through any color, while black nodes and wires cannot pass through anything. Enjoy!