good game

Delicious game line.

Nice little interface for playing Go. Since I'm not that experienced with the game, I'm not really qualified to tell you if the AI is any good. I can, however, say that I've had quite a lot of fun with it for 10$. That, and I have been able to use it to become better both by AI play and the puzzles.
I imagine no matter your skill level this game is certainly worth 10$. If you're new you can get a taste for the game, and puzzles to help improve. If you're already good at the game then you get puzzles, and a fancy interface for playing games with people online via OGS (Online Go Server).