5ud0ku review made my day 
Looking around for links to our
5ud0ku game, I stumbled across this
dooyoo review, which made my day:
…
And that's about it; utterly brilliant for Sudoku addicts like me. I would have been prepared to pay money for this game. The fact that it's totally free just shows that there really is such a thing as a "Free Lunch". That it's also just about the best implementation of electronic Sudoku available is really the icing on the cake.Summary: The best version of Sudoku ever and mobile too!!!
(partial quote from dooyoo.co.uk. For full review follow link above)