During the game you'll be presented some intelectual challenges which must be solved as best as you can. Depending on the results, the game will assign you a mental age. Although the demo version is short it gives you a good idea of what you get if you buy the full version.
Dr. Kawashima's Brain Exercise is very funny, and at the same time is very good for your brain, because it keep it fit. Suitable for any kind of user.