This part of the Zelda saga is perfectly in line with the first Zelda game on Nintendo DS released (Phantom Hourglass). In particular we find the same scenarios except here we travel by train, we find the same very childish graphics, one progresses in the temples of the same. But that does not penalize this game, you are caught in our adventure, train travel times are fun especially as we can to progressively improve the structure of our train and change its appearance. We can have fun playing Zelda Spirit Tracks even that played Zelda Phantom Hourglass before.
Note that this game does not end in 2 days, it takes time to overcome even if this is not the most complicated game of all the Zelda saga.
One can also note that this game was designed to use all the DS performance.