This game is for 4, not 2. Your parner is not a good player even on the High Skill. If you have 6 cards in a meld, she will throw away the 7th card. It is not written well, but it is the only Canasta game I can find for Mac-OS X Tiger. I guess it is better than nothing. Even on the High Skill, it is easy to win.

I've played hearts, cribbage, spades, crazy-8s, and freecell on the Macintosh version of this game and it's only average. It suffers from the same problem most card game software does--it doesn't feel like playing with other people. On the "medium" level the AI shuffles the deck in the machine's favor as you improve. Unfortunately this has the affect of making you think it's stacking the deck instead of playing better. Also, the "help" is poorly written--if you don't already know the card game the help is confusing--just buy the Hoyle book or Bicycle book to learn a game you're not familiar with--it could do with tutorials and hints to help you improve your game.