Big Brain Academy is one of Nintendo's two edutainment games out for the DS right now, and while it's not as compelling as Brain Age, it is enjoyable in it's own right. The challenges put in front of you are basically a sereis of cognitive tests that are graded to give you a "Brain Weight". The heavier the brain, the smarter you are. If you have Brain Age, you probably will find this game a little lacking. But, if you are on the fence to try one of these games, try Big Brain Academy first.