It was first sold in stores in North America on May 15 , 2006 , and was later sold in stores in Japan on May 25 , 2006 , in Australia on June 8 , 2006 , and in Europe on June 30 , 2006 . A sequel , New Super Mario Bros. . New Super Mario Bros. was released by Nintendo in North America on May 15 , 2006 , in Japan on May 25 , 2006 , in Australia on June 8 , 2006 , and in Europe on June 30 , 2006 .