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 Gp Imp.:
Finally an exciting and addictive app that will take you around the world testing your ability as a multitasking air controller! Up for the challenge?With six different scenarios and difficulties you will have the chance to direct and manage the air traffic. It will not be an easy task!Every time an airplane arrives you will need to help him land and go thru the different stations. Depending on the level there will be more stations and mor airplanes to manage. Be careful the airplanes don't crash! Every airplane has a limited amount of fuel and time; if it runs out you will loose... Ready to take off?With game center the challenge becomes even more fun; since you are competing not only against yourself but against the world!What are you waiting for? Fasten your seatbelt and have some fun!