

In Mario Kart Wii, the Earth can be seen underneath the track. However, the difficulty level of these courses are much lower than the other Rainbow Roads, even with sections without walls.
N64 RAINBOW ROAD MUSIC MARIO KART 8 SERIES
In the Mario Kart Arcade GP series of arcade racing games by Bandai Namco, there are two Rainbow Road themed tracks (Rainbow Coaster, for example, gives a very rollercoaster like experience much like the DS Rainbow Road and features a teleporter mid-stage). Its rainbow-colored striping runs along the length of the track, rather than from side to side (as in previous Rainbow Roads). Mario Kart DS's Rainbow Road features a looping and a corkscrew-shaped sequence-a first for the Mario Kart series-and includes rails along a few turns of the course only. In multiplayer mode, due to details on scenery being lost to keep the game speed up, the whole city backdrop is completely removed, meaning this course, like the other Rainbow Roads, appears to be floating in space in the traditional manner. It has the most pearlized colors of all Rainbow Roads, and its background music resembles that of the N64 Rainbow Road's. It also contains floating sculptures of various items, and in competitive play, Stars occasionally fall onto the track where a player can pick them up and gain temporary invincibility. Much of the course is downhill, after which it features jumps, and a pipe that shoots racers to the highest point in the course. It includes sections with and without rails, and an upward-shooting air tunnel for the first time in the series. Mario Kart: Double Dash!!'s Rainbow Road is set high above a city at night, which could be a reference to the "Mushroom City" track earlier in the game. It features rails at the start/finish line only all other edges of the course are lined with jump ramps. Mario Kart: Super Circuit's Rainbow Road is set in space, with Bowser's Castle from Paper Mario floating in the background. Mario Kart 64's Rainbow Road is also recreated in the sequels Mario Kart 8 and Mario Kart 8 Deluxe with three sections of one lap as opposed to three laps. With the 64DD, an F-Zero-style remix of Rainbow Road's music plays. A version of this Rainbow Road also appears in the 'Joker Cup' of the 1998 video game F-Zero X, where it is described as a "Psychedelic Experience" (and many of its rails are removed). It features rails throughout the length of the course, roving Chain Chomps, a large drop right after the starting line, and neon-light images of various characters in the distance. Mario Kart 64's Rainbow Road is the longest course in the series, at three laps of approximately two minutes each. It is part of the base game in Mario Kart 8 Deluxe. In Mario Kart 8, it is available as DLC, as the second track of the Triforce Cup. The track appears as an extra track in Mario Kart: Super Circuit and modernized in Mario Kart 7. Several flashing Thwomps appear throughout the course, and are uniquely able to wipe out racers just by touching them (as well as crushing them), although the Thwomps were removed when this track later appeared as a retro track in Mario Kart: Super Circuit. Super Mario Kart's Rainbow Road is constructed from quadratic rainbow-colored tiles, with no rail at all, and all turns are at 90 degrees. The Rainbow Roads of some Mario Kart editions have been revised to be featured more than once throughout the series. It typically is among the most difficult to complete, since most of the Rainbow Road tracks have no rails to prevent the player from falling off the edges of the track during a turn, and oftentimes have tight curves, steep slopes, and wavy grounds. Rainbow Road customarily appears as the final original track of each game.
