Electronic Arts’ Yahtzee ($5) is the latest example of the board game as iPod game—a half-century-old dice game converted, with minimal frills, into a Click Wheel-ready format. You do nothing more in Yahtzee than repeatedly shake a cup with six-sided dice in an attempt to match or sequence as many of the dice as possible. The cup starts with five dice, which are tossed onto the table in your first throw, giving you the option to keep or…