This is the first entry and by far, the most successful. Selling over 19 million, it is one of the best selling original titles.
The follow-up to the original and it added more exercises as well as having the old ones. It sold less than the original at 14.88 million.
This is the 3rd actual entry and the first on the 3DS. This entry focuses more on getting the brain to improve its concentration but incorporates older games' tests as well.
Brain Age: Express
There are 3 Brain Age Express titles. They each offer a small portion of what the full titles do focusing on a certain topic. Arts and Letters and Math are 800 DSi points while Sudoku, which is completely Sudoku puzzles, is 500 points.
References in other media
Super Smash Bros.
A couple Nintendo Directs were done in a style where Iwata was represented in a style like Dr. Kawashima in the Brain Age games.