Brain Age Concentration Training (USA) (日本名: ブレイントレーニング脳を鍛える数学トレーニング, Nihon-me: Burein Toreeningu: Nō o Kitaeru Sūgaku Toreeningu) is a Nintendo 3DS game developed by Nintendo and released in 2013. The game is designed to help players improve their memory and concentration skills by playing a series of math-based puzzles. Players must complete a series of math problems in a limited amount of time, and are rewarded with a score based on how quickly they solve the problems. The game also features a variety of mini-games and activities designed to help players improve their concentration and focus. Brain Age Concentration Training is a great way to improve your cognitive skills and is suitable for players of all ages.