Americans are probably the society most often associated with the baby boom, but we by no means have the market cornered on aging. In Japan, 20 percent of the population is now over 65, which is a record for that nation [source: Pearce].
This led video game giant Nintendo to focus on the rapidly growing demographic. They partnered with Dr. Ryuta Kawashima, a neuroscience researcher at Tohoku University, whose researched showed that certain types of games could actually reduce the symptoms of dementia and other brain-related illnesses. Enter Brain Age, a game designed to keep aging brains around the world in top shape. The Nintendo DS game was released in the United States in 2006 and proved to be immensely popular [source: Pearce]. Since then, Nintendo has released the equally popular Brain Age 2.
The games present a series of brain-teaser type puzzles in which players strive to improve upon their previous completion times. There are word and math puzzles, a piano-playing game, Sudoku and even a voice-recognition rock/paper/scissors game. After completing a series of challenges, the system reveals your "Brain Age" which, participants hope, is not any older than their real age.