Brain Age: Concentration Training has launched in the Nintendo eShop on Nintendo 3DS. Consumers in North America can download the puzzle game right now for $29.99. According to the Nintendo eShop, Brain Age: Concentration Training features newly designed training exercises that are supposed to help improve players’ concentration skills and the ability to access their short term memory. If you want to try out the game before buying it, download the free demo from the Nintendo eShop.