I remember buying the original game back in 2006, and really liking it. Then it gets a little old, and you feel kinda sick of it. Sorta like listening to a really good song a billion times. So I never got the sequel that came out a year later. However my girlfriend picked it up used, and I tried out her copy.
Brain Age 2 is pretty much exactly like it's predecessor with brain games and sudoku puzzles. Except all the new mini-games are less plain and a bit more original.
Which is good and bad in some ways. They're definitely more of a challenge at times, and might leave you feeling like a dim-witted buffoon with the cranium of a geezer. I just hope it can keep my attention more than the original.