IncGamers' Tim McDonald puts on his engineer's cap and takes The Legend of Zelda: Spirit Tracks for a ride.
From the review: "This time around, Link's constant companion isn't a random fairy: it's the title character herself in disembodied spirit form. Villain Malladus, a demon king who has to the best of my knowledge never been mentioned before, needs to reincarnate in her body, and before you can say 'Hey! Listen!' Zelda is whisked away and you're left with her soul. As with another recent DS title – Bowser's Inside Story – the constant companionship of a major series character really gives an insight into a personality that we haven't seen so much of before."