Observation Training DS import (soon to be Flash Focus) review at Gamebrink.
"It’s been 2 years since Brain Age the first “non-game” was released in Japan for the DS and it shows no signs of dropping out of the top 10 titles whether in the East or West, selling over a massive 4 million copies in Japan alone. However, while Western shores are pretty much stuck with that one non-game title at the moment, the Japanese have been receiving many more training games covering all sorts of activities but none have really managed to achieve the same success as Brain Age until now. The latest craze to beat Brain Age 2 in the charts is “Practical Observation Training DS” topping the Japanese sales charts for several weeks now."
Full Source: Gamebrink