JellyFish Backgammon (16-bit) is a full-featured Backgammon game. It is a neural network-based backgammon program that plays at a very high level. For example, at level 5 a top player will hardly win more than 55% of the time.You can play a single game, or a match of any length. The features include doubling, finish game, take back, move undo, editing positions, seven levels of difficulty, swap dice, swap sides, show last move, game save, finish game, the ability to replay a game or match, customizable colors, the ability to print a log file, and more.Note: On the author's Web site it states that a registration fee for JellyFish Player 3.0 is no longer required. For User Name you can enter "JellyFish", and for Registration Code enter "446242696188214".