So it's swept the world and now it's on your BlackBerry. Yes, Sudoku has landed. What is there to say that hasn't been said? Well first of all for any of you who don't actually know what Sudoku is, and I'll be amazed if you exist, the game is a numbers puzzle played in a grid nine squares by nine squares and separated into smaller boxes, three squares by three squares. Each long line across the main grid must contain the numbers one to nine, and so must each smaller three by three grid.
In this version for the BlackBerry the rules are the same, but there are bundles of extras including helpful hints, timers and pencil mode (so you can rub out your mistakes). This is a demo but in the full version you can download new puzzles every day for free, which sounds like good value to me.