Nintendo said on Tuesday it expected Pokemon Diamond and Pokemon Pearl for its DS to be among the top-selling U.S. games of 2007, based on presales of more than 533,000. The games, which are the latest installment in the popular animated Pokemon franchise that has spawned trading cards, toys and films, will introduce players to more than 100 new Pokemon characters. The new games will hit U.S. store shelves on April 22.