cognitive and brain fitness

I am trying to understand whether Nintendo intends to expand its cognitive fitness and exercise offerings into the senior market or whether its success is accidental.  Here is a response I received when querying Nintendo about their plans for targeting seniors: "Nintendo’s goal is to expand the world of video games to new audiences, so while we were not focusing on seniors exclusively, we wanted to make a system that could be played by everyone in the family, from 5 to 95.  It is exciting to see that it's been such a big hit in senior centers and think it's resonated with them for a number

A market research firm, SharpBrains, which bills itself as "The Brain Fitness Authority," has posted a product evaluation checklist for determining whether a brain or cognitive fitness software product  is the 'right' product for you. By the way, SharpBrains estimates this software market was $225 million in 2007.

I love the idea of 'brain wellness'!  Don't we all want our brains to be well? Exercising them right along with our calf raises and seated arm curls.  But how? And with what? We certainly know that web surfing helps but there is an entire product range out there from game workstations and technology, but also software that is purely for improving mind health and vigor.