Rainbow Route

Rainbow Route is the first area in the Game Boy Advance game Kirby & The Amazing Mirror. It's a simple forest level, similar to many of other starting levels in the Kirby series, and it houses a warp zone of sorts, known by fans as Central Circle, that contains mirrors that warp the player to different places of the Mirror World, though the player needs to press switches scattered across the world in order to unlock these mirrors. Rainbow Route is also connected directly to 4 other areas of the Mirror World, those being Moonlight Mansion, Cabbage Cavern, Mustard Mountain and Carrot Castle.

In M.U.G.E.N, Rainbow Route has been made by Gudine under the name "Mirror Chamber"; It is based on its Super Smash Flash 2 appearance which, in turn, is based on the Central Circle area.

Gudine's version
This version uses sprites from Super Smash Flash 2 and, though it is indirectly based on its original appearance, it has a few differences from Kirby & The Amazing Mirror, such as a different arrangement of the platforms (and by extension, the mirrors) and a lack of mirrors, since there are only 5 mirrors on the stage. It also has the Dimension Mirror at the top-center of the stage, slowly moving up and down and opening and closing at times. The stage only works in 1.1 due to both using RGB images on the clouds near the ground and slightly angling a sprite in the background pillars.