There is no real proof that this will actually train your brain, but at a budget price, it's overall worth a try.

User Rating: 5.5 | Brain Age: Train Your Brain in Minutes a Day! DS
The new hype is that video games can make you fit, but there is also one that video games can make you smarter. Is that true? Well, there isn't really any real convincing proof that this can train your brain. Plus you are still staring at a video game screen, only you are just using your head a little bit. I overall have a loss in words. There isn't much to say about this game. What you are mainly doing is training your brain by doing challenges. There is a brain age check where you do 3 challenges and based on how you did, it caculates your brain age. It isn't very accurate all the time seems to be one main problem. There is a wireless gameplay, but it isn't much to it. All you can really do is a math challenge, whoever gets the most correct anwsers out of 30 problems wins.

Simply put, this is an unexciting game. It isn't all expensive, but you still don't get your moneys worth. Just dont play it.