My husband Doug, and his friends are all huge gamers. You name it and they play it, board games, poker, card games, X-Box, computer games and even role playing games. In fact, once a month they have a get together with his friends just to play any games available. One thing I know is Rick, one of his friends loves to play sudoku games and he is into the game big time. Rick bought sudoku games at the store to keep him busy while waiting for his friends to come over and when he had back surgery a few years ago. Today, you can find free printable sudoku on the web without spending even a dime. Playing games like this are great brain boosters to test your knowledge and to work your brain out. The more you use your brain the better you can remember and think quick. I have been playing as well on my husbands phone. I have been playing sudoku and Are You Smarter Than a 5th Grader. Even our son, Charles though only three loves to play games that test his skill and quick wits. There is nothing like learning and making yourself better while at the same time having a blast playing a game.