"Brain Age defies typical description. You can't really categorize it like you would a typical video game. It is based on some work that was done by a neuro scientist in Japan, who felt that certain exercises can really keep your brain sharp, increase blood flow to certain parts of the brain. And these can be very simple exercises. Math problems, math calculations, reading aloud. Almost like when people do crossword puzzles and Sudoku and other things. So we took that kind of knowledge, that learning and put it into a game and added elements to make it have a more game-like feel." The game tracks your progress over days and weeks. You may or may not want to know what it says about your real brain age. The game sells for under 20 dollars. Of course you need a Nintendo DS to play it. It goes for about 130 dollars. Nintendo is looking for ways to broaden its appeal…with Sony giving it competition in the handheld space…with the Playstation Portable. Bloomberg Boot Camp, I'm Fred Fishkin.