http://d.yimg.com/a/p/ap/20100523/ca...2m4t8hwsKZqQ--AP - Gone are the days of left-to-right scrolling in search of 1-ups for Mario, Luigi and the gang. In "Super Mario Galaxy 2" ($50), Nintendo's latest installment, Mario has a multidimensional universe of topsy-turvy worlds to explore.
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