Nintendo 's `` Brain Training '' has sold over 10 million copies worldwide . Comment: Did `` Brain Training '' make our reporter smarter ? I fluff the exercises , the new one 's a nightmare and Dr. Kawashima is tormenting me with a 5x5 square of random numbers that I 'm supposed to remember . Well , it got her hooked ...
Nintendo 's `` Brain Training '' has sold over 10 million copies worldwide . Comment: Did `` Brain Training '' make our reporter smarter ? Well , it got her hooked ...