Everyone seems to love Sudoku (originally known as "Number Place"), so it was only a matter of time that - like iPods- shops would start selling the game in vending machines. While I found this Touchscreen Hand-held Sodoku at Thinkgeek.com, it's just as trendy. For those of you that don't know, Sudoku is a puzzle that you solve using a proper combination of logic and patience.
Sudoku consists of a grid of 81 squares, divided into nine blocks of nine squares each. Some squares contain figures. Your task is to fill the remaining empty cells, so that each row, column and region contains one instance of every number from one to nine. Programmers flock to Sudoku like they do to recursive algorithms. The games seems to be a hit for people of all ages and geekiness. For more about this Sodoku game, just read more
The Touchscreen Hand-held Sodoku includes puzzles selected by New York Times columnist Will Shortz (the same Will Shortz featured in the fabulously geeky movie WordPlay). It also features an auto-save option that turns off the unit when it is not being used and saves your game. For $19.99 you get 835 puzzles in four different levels of difficulty.