It's a fun game, but moreso seems like ill use it for conditioning purposes (Ill probably play it more to work on my minds health than I would for entertainment).
The interface is hit or miss. I had no problems at all with the voice recognition. As for the stylus; There were a few numbers I had to refine, namely 4 & 8. At least doing so improved my hand writing!
The most impressive aspect came when I was instructed to flip the DS (you hold it like a book) around once I told it I was left handed. It was funny how the game sympathised with me for being a lefty. "Left handed people are more athletic!" 
The exercises are accessible once a day, as the software creates a personal file and records your progress. My first asessment landed me w/the mental age of 57.
Lastly, it comes with Sudoku. Never played it before, but Ive always wanted to learn. Overall this is a fine installment to the positively unique DS library.
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