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 Eddie Rise:
HockeySlime Lite is a one-player version of Slime Hockey for the iPhone/iPod touch! Defeat 3 opponents to become the champion. Upgrade to the full version for more opponents, a practice mode, and your choice of slime color. Here's how to play: You are the slime facing right. Try to get the puck into the right goal while keeping your opponent from scoring in the left goal. Each time you score you gain a point and your opponent loses a point. Score six points to move to the next level. Control your slime by dragging it with your finger. Don't drag too fast or you'll lose control. I like to hold the iPhone in my left hand and use the pointer finger of my right hand to move the slime, but you're free to experiment.