Brain Age, a game that has been marketed for adults not for violence, bad language, or gratuitous sex but due to the amount of brain puzzles and brain teasers included in it has achieved a certain amount of popularity on this side of the water as the latest brain improvement fad. This game has been touted as a way for gamers to improve their mental agility without playing Tetris 17 hours a day. Over here it's presented as just a fad, electronic pseudo science at best, but in Japan this sort of mental improvement is part of an entire industry that been around for a rather large chunk of time. A bit more can be found about this industry can be found at this interview at Sharpbrains here http://www.sharpbrains.com/blog/2006/12/04/brain-training-and-brain-ism-in-japan/