Nintendo's quirky DS title Brain Training For Adults has sold over 100,000 copies in three weeks.

Currently on top of Japanese software sales charts, this quirky puzzle title tests your mathematical and musical skills using the touch screen and microphone. In just three weeks the game has sold through 101,000 copies.

President of Nintendo Satoru Iwata has said the game sold well with the traditionally non-gamer demographics Nintendo are now chasing - adults and females. Along with the massive popularity of Nintendogs, sales of the DS now stand at 5.27 million units worldwide.

Nintendo developed the title with Japan's Touhoku University, although over in Japan just saying the game's title alone is a challenge: Touhoku Daigaku Mirai Kagakugijutsu Kyoudoukenkyuu Center: Kahashima Ryuuta Kyouju no Nou wo Kitaeru Otona no DS Training. Phew!