I'm very happy to see a well-implemented freeware Mac version of one of the most addictive card games ever. The program is stable and works great.

Here are two quick suggestions for version 2.1 (or later):

1. The game window would look a bit better, I think, if it were a little less crowded ... and it would play easier if there were a visual space between the left four spots on the top row (where cards can be temporarily stored) and the right four spots where the aces go.

2. I know this is was complicated, but it would be great to have a transparent background and animated card movement, like in the program Solitaire XL. :)