This version is based on the Hoyle 2007 version available at that time for MS based machines. It is far superior to the 2009 version available back then in Apple stores. That version was full of glitches. This version operates far more smoothly. Some of the complaints in the reviews about what it doesn’t do are simply the fact that the user didn’t know how to do them, like the supposed inability to turn off the sound. However, the big problem I have with all “Hoyle” card games by this company is that, while they know the Hoyle rules, they don’t have any decent concept of strategy, which makes it difficult to have a partner who is smart. For instance, a computer partner will allow you to go out in Canasta while the computer partner is hold 5 cards of a value and a 50-point wild card to boot. This can add up to hundreds of lost points in a single hand, keeping in mind that the point value lost is double the points in the hand (they count against you and they don’t get you the points for laying them down!). The 2009 version I bought at the Apple store when I purchased my iMac would have been only a one or two star rating. At least this one is better. Another problem with this version is I haven’t found a one-click way to go from one Solitaire verseion to another.