A better title, "Left Handed, Right Handed", this unusual title asks you to compare the fine motor abilities of your left and right hands, by doing identical tasks with both, and then comparing the scores. To put it another way, it measures your ambidexterity. To play the game, you turn the Nintendo DS on its side, book style, to test your ambidexterity -- in other words, the fine motor skills that you have in your right hand vs. your left hand. Note that this isn't a game per se. Like Brain Age, it is more of a collection of fine motor drills -- some fun and some more like work.
There are 15 mini-games that start with asking you to touch a moving box, first with one hand, and then the other (you turn the DS 180 degrees). After you do the same task with both hands, the computer tells you your percent correct on both sides of your body.
The idea is that you can work to exercise your least dominant hand in order to become stronger. Other activities ask you to connect dots, flick moving asteroids from hitting the Earth, play a game of whack-a-mole, and move a dot through a maze. This latter activity replays your prior performance, and challenges to you beat yourself. Or, you can race against another player using the DS wireless play mode. So does it work? If nothing else, it is an interesting example of creative design, measurement and assessment, using the DS pen based interface. Note that reading is required. Records for up to four people can be saved on the cartridge. Created by Japan Art Media for Majesco.
Link to buy Left Brain, Right Brain Game