After playing with a friend's Nintendo DS a few days ago, I could not help but come away impressed. You see, the friend is a middle-aged person that's not a game player.

What was he playing? Brain Age 2, a non-game for the portable game player that has its sights set on helping memory skills in anyone that wants it.

The 'game' features quite a few brain teasers that I thought were very challenging. The execution of all of them (especially the Sudoku game) was excellent, and it's another reason why more people outside the regular gaming community opt for gaming systems like the Wii and DS game systems. Nintendo continues to impress me.