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 Deutsche Lufthansa AG:
How well do you know the Lufthansa fleet? If you want to put your knowledge to the test, take part in our Lufthansa Top Trumps game. We are offering you the opportunity to get to know our aircraft from the current and past Lufthansa fleet in a fun way.Compete against either the computer or other players and let the 32 aircraft with their original attributes win the trick.Earn points and rate yourself against other players in the ranking. If the initial score isnt enough for you, then simply activate the bronze, silver and gold trophies.In addition to the game there is plenty of insider information available to you about the aircraft in the Lufthansa fleet as well as high-quality photographs.Runs on all iPhone's from iOS version 4.3.1 (iPhone 3GS)