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 Amy Faulkner:
This app is not for the faint hearted. Unlike other reflex action games this app is designed to help you improve your gamepad trigger reflex response or your Paintball gun trigger response.By taking you through ever progressive challenges from novice to expert you will discover your own techniques to keep you in the game!Once you feel you're the best take the World Challenge and compete against others who also think they are the best all over the world through Game Center.Works on all iPads supporting iOS 3.2 and greater