The Brain Age games, known as Brain Training in Japan and Europe, are presented as a set of mini-games that are designed to help improve one\'s mental processes. These activities were informed by Dr. Ryuta Kawashima, a Japanese neuroscientist, and are aimed to stimulate multiple parts of the brain as to help improve one\'s abilities and combat normal aging affects on the brain. Activities are generally based on two or more mental stimulii and to be completed as fast and as correctly as possible. For example, common activities include Calculations, where the user is presented with a list of single-operator math operations and the user uses the system\'s touch screen to write their answer to each question, and Stroop Test based on the Stroop effect, where players must say into the unit\'s microphone the color of the text of a color name that appears on screen. Activities are usually presented in both a Training mode, which allows the user to practice to get the hang of how the activities are played out, and a Brain Age Check, where the user completes multiple activities outside of practice, with the game estimating the person\'s \"brain age\" based on how quickly they completed all the tests and accounting for any incorrect answers. The game tracks a user\'s performance over time to help show the effects of daily interactions with the game.