for the memory/maths games it would help, and on the faster bit of games like traffic control then it'd help you get into position
personally I'd rather use the game to get there myself, as I'd then actually have a brain age that young - on the DS I had an age of 24, which is about 20 years younger than my actual age :-P
1000+gs=15 - 1000gs=37 - 900+gs=11 - 800+gs=11
40k 28-09-2009; 50k 31-07-2010; 60k 29-09-2010
70k 27-12-2010; 80k 07-02-2011; 90k 31-03-2011
100k 18-05-2011; 110k 29-06-2011 120k 19-09-2011
130k 25-02-2012; 140k 03-03-2013 150k 06-08-2013
I'm slowing down...