Mac500 is a Mac version of the popular card game, Five Hundred. You and a computer partner play against two computer opponents. Mac500 allows you to choose some of the most popular variations of the rules of Five Hundred, and it keeps a history of games and bids won and lost by you and your opponents. You can name your players and change the bidding styles of the computer players. If you are new to the game, you can have Mac500 suggest bids and cards to play.