New Super Mario Bros. [a] is a 2D side-scrolling platform game developed and published by Nintendo for the Nintendo DS. It was first released in May 2006 in North America and Japan, and in Australia and Europe the following month, and is a part of the New Super Mario Bros. subseries of the Super Mario franchise. Similar to other side-scrolling Mario games, New Super Mario Bros. follows Mario as he fights his way through Bowser's henchmen to rescue Princess Peach. Mario has access to several power-ups that help him complete his quest, including the Super Mushroom, the Fire Flower, and the Starman, each giving him unique abilities. While traveling through eight worlds with a total of 80 levels, Mario must defeat Bowser Jr. and Bowser before finally saving Princess Peach.