Backgammon (Psion Software/Sinclair Research)

Backgammon is a computer version of the board game with the same name. It allows to play against the AI which can be set to four skill levels. Optionally the player may choose to forfeit random dice rolls in favour to manually enter the results. To help new players unfamiliar with the rules, the game will give explanations when an illegal move is tried and, by pressing the associated button, move recommendations. As long as the game is not shut off, it allows to play multiple matches successively and keeps score.