8. Sudoku (Free) Sudoku is everywhere—newspapers, books, and phone apps. They’re easy to understand and intriguing. The app works just like the paper and pencil version of the game.
https://mamiverse.com/wp-content/uploads/2014/06/The-Brain-Train-15-Apps-that-Sharpen-your-Mind-MainPhoto.jpg500743Mamiverse Teamhttp://mamiverse.com/wp-content/uploads/2018/02/logosmallMamiverse-1.pngMamiverse Team2014-07-01 13:27:232016-07-15 14:54:52The Brain Train: 15 Apps that Sharpen Your Mind