If you are into maths puzzles, why not try out XDA forum member MaloventEvil‘s puzzle game for Android?
NumNom is a free brain age style puzzle game – easier than Sudoku and with no time crunch like Kakuro. Scores are stored online, so that you can compare your high scores against your friends and enemies alike. There is even an XDA group so that you can compare your scores to other XDA’ers!
NumNom (Free!) is available to download in the Market. If you’d like to donate to the dev, a paid version is also available, ad-free with an additional 100,000 levels.
To provide feedback, take a look at the application thread._________