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 Impresiones Web S.L.:
Spiderly HD LITE version for iPad New and improved version of Spiderly with better graphics and harder to play. We use the full screen of the iPad to increase the fun! Use the birds to stop the evil spiders and defend the nice old lady and her house. Play through the 7 first levels for free and buy the full version to get: - 19 lvls in the first episode - Rolling bombs will help you exploding the spiders of its same color - Black clouds will try to confuse you changing the spiders, be careful! Expect new episodes and fixes in the HD full version.