|World 9 Rainbow Road (NSFMBTAR)|
|Appearance||New Super Flash Mario Bros. The Adventure Returns|
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This world is inspired by Special Zone from Super Mario World and World 9 from New Super Mario Bros. Wii.
World 9-1 Flowery Garden
A first and grassland-themed level based on World 1-3 in Super Mario Bros. 3.
World 9-2 Layer-Cake Desert
A second and desert-themed level based on World 1-1 in Super Mario Land with many pyramids.
World 9-3 Sparkling Waters
A third and water-themed level featuring the waterfall background from New Super Mario Bros. U. This level is half-similar and half-based on Sparkling Waters-4 Urchin Shoals in New Super Mario Bros. U.
World 9-4 Poisonous Jungle
A fourth and jungle-themed level featuring many giant enemies and blocks, it also features a longest raft that appear in this level.
World 9-5 Night Glacier
A fifth and ice-themed level that covers with slippery ice and waters, the enemies features many jumping Cheep Cheeps.
World 9-6 Rock Candy Mines
A sixth and mountain-themed featuring many pipes with Piranha Plants. It also includes many warp pipes that take place in the mountainous pipe maze.
World 9-7 Sky Islands
A seventh and sky-themed with grassy high islands with bottomless foggy pits. It features many Para Beetles.
World 9-8 Magma Pools
An eighth and lava-themed castle level with pools of magma. This level does not feature a boss battle which is the last level in this rainbow-themed world which Mario completed all of the worlds.