Its up to you to assist Mario as he restores peace at Mushroom Castle. Bowser is up to no good againstealing the Power Stars that shield the castle. Bob-ombs live inside the paintings decorating the castle and Bowser has invaded them. Mario will have to enter the painting world, retrieve the Power Stars, and halt Bowser before he turns the Bob-ombs into a monster militia. This one-player game for the Nintendo raises the bar for video game excitement. Bowser is no competition for Mario.