HD Apps

Zune Marketplace included an applications section where apps and games could be downloaded for the Zune HD. The store initially launched with nine apps, all of which were developed by Microsoft and released for free. The selection of apps expanded to sixty-two games and applications over two years.

How to install?

To install these games go to %LOCALAPPDATA%\Microsoft\Zune\Applications and copy the files there. You’ll need to create that folder if it doesn’t already exist.