One of the video games uploaded by the store where we purchased the 4G memory for my daughter's Nintendo DS Lite is this Big Brain Academy. I got to play with it several times with my kids and we had a good time mashing our brains for abrupt answers.
Want to test your brain and know its mass? As an adult this one probably helps testing my memory and logic so as not to get it rusty. Of course as compared to my kids I know more answers than they are but it is kind of different when you are under time pressure. The five categories (Think, Analyze, Compute, Identify and Memorize) will really squeeze your brain to think of the answer and you need to do it as fast as you can to prove your brain's mass is bigger.
The family likes the different sub-categories of this video game. For every main category you have three sub-categories to play with. If you are not yet ready for the test then do the practice mode to give you an overview of the actual test.
The video and audio are great especially the sound of ticking timer. We have a great time playing this video game as a family. There are times that we play it as a group and sometimes compete as to who has the biggest brain mass among us.