<P> Although the main objective is to navigate through seven worlds to reach the end of the game, the player can beat the game much faster by using secret Star Road routes . To access hidden worlds, the player needs to find portals scattered throughout the game's levels . Portals are usually locked and require keys to open . Exploring these secret stages can lead to other stages, such as Special World . Completion of Special World permanently changes some of the enemies' sprites and alters the overworld map's colour scheme . </P> <P> After saving the Mushroom Kingdom in Super Mario Bros. 3, brothers Mario and Luigi decide to go on holiday to a place called Dinosaur Land, where there are many types of dinosaurs . While resting on the beach, Princess Toadstool disappears . When Mario and Luigi wake up, they try to find her and, after hours of searching, come across a giant egg in the forest . It suddenly hatches and out of it comes a young dinosaur named Yoshi, who tells them that his dinosaur friends have also been imprisoned in eggs by evil Koopas . Mario and Luigi soon realise that it must be the evil King Bowser and his Koopalings . </P> <P> Mario, Luigi, and Yoshi set out to save Princess Toadstool and Yoshi's dinosaur friends, searching Dinosaur Land for Bowser and his Koopalings . To aid him, Yoshi gives Mario a cape as they begin their journey . Mario and Luigi continue to follow Bowser, defeating the Koopalings in the process, and save all of Yoshi's dinosaur friends . They eventually make it to Bowser's castle, where they fight him in a final battle . They defeat Bowser and save the Princess, restoring peace to Dinosaur Land . </P> <P> The game was directed by Takashi Tezuka, while Shigeru Miyamoto, the creator of both Super Mario and The Legend of Zelda, served as producer . Shigefumi Hino took the role of graphics designer . Nintendo Entertainment Analysis and Development handled development with a team of ten people including three main programmers and a character designer, most of whom had worked on Super Mario Bros. In a retrospective interview, the core team said that Miyamoto wielded the most authority during development . </P>

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