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 Luke Campbell:
Thirty One is now available right on your Mac! The iPhone version was one of Wired.com's readers favorite apps of 2009. Thirty One is an exciting, addicting and fun card game where you play against two computer controlled opponents in a battle to get closest to 31. Thirty One (You may also know Thirty One by another name such as Big Tonka, Blitz, Scat, or Cadillac) is a strategy based card game where you try to get your hand of three cards closest to thirty one (only cards in the same suit are added together). You play against two computer controlled opponents named Jack and Jill. You will have hours of fun trying to out smart them by holding cards you know they want, knocking when you think you have the best hand, and getting a blitz (a hand of exactly 31)! Thirty One has many great features: - Great single player gameplay - Two computer controlled opponents - Game is automatically saved on exit- Game can be stopped at any time then resumed - Keeps track of game statistics - Keeps track of in game credits you have earned - Clean and intuitive interface - Support for any screen size* Reviews from the iPhone/iPod Touch Version * Picked as one of Wired.com reader's favorite apps of 2009! Thirty One has been featured in Apple's "What we're playing" section on iTunes! Thirty One was voted the number 1 card game by members of toucharcade.com! "Overall Thirty One is deceptively addictive its another one of those gotta play just one more round games that I personally love." - panappticon.com "A different kind of card game that requires a bit of strategy combined with the mind games of poker - challenging, unpredictable and addictive!" - www.appsized.com "Thirty One is particularly fun because it feels familiar but is truly unique. All in all, its a fun game, and well worth a play." - appgirlreviews.com "It's a very addicting game and it's very easy to use. 5/5" - Daniel_Mysterio (iTunes Reviewer)