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.
This is the old famous XO game or Tic Tac Toe. Every player has three tokens and they try to make it in a row to win. I don't think there would be anybody in the world that has not play this game. I hope you enjoy it.