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.
Delete as many marbles as you can, you delete a marble when you jump over it with another marble. If you are really good, you can finish with only one marble left! Use the settings tab from the menu to change boards and marbles.Please rate and leave a comment :-)