The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From NESE AVCIL:
This Game is IOS 8 Ready!Swipe the black arrows in the same direction, empty arrows in the opposite direction. Click and hold when you see Hold... When you see circles tap the number of circle...Easy, right?