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.
From Geek Quarter:
ABCville What Is That is a fun and educational way for kids and preschoolers to learn names of objects found in and around school from eraser to school bus. The pictures of objects will be shown so kids can easily remember them.For a limited time only you can download this app at the iTunes App Store for Free. Other Top Educational Games for iPhone, iPad and iPod: (enter one of these keywords below to search the iTunes store - Please write these down for your future reference) ABCville Smart Kids ABCville Detective ABCville Alphanimal ABCville Animapedia ABCville Animal Nativity