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.
Everybody talked about a web browser game reversing the idea of "Breakout" called "Save The Block" in Twitter.
Now that game has become an iPhone App.
"Save The Block" is a game breaking blocks by having falling balls hit a bar on the screen and bouncing but "Save The Block" is in reverse. Points accumulate as more balls fall by operating so that the ball does not hit the bar and when all blocks are gone, the game is over. You can tweet your points on Twitter and complete with other players.