Check out Gammonsoft games for the Mac. Absolute Backgammon is the premier backgammon game for the Mac. Absolute Acey Deucey Backgammon has 6 variations of backgammon. Plus Absolute Farkle and David's Backgammon for the Mac and Windows.
First I need a little information to set things up
Enter a name/nick name to use when playing (use just letters - no spaces)