Note that this article is under construction. Therefore, please excuse its informal appearance while it's being worked on.
Newer Super Mario Bros. Wii
Underground Railroad
Game Newer Super Mario Bros. Wii
Level number 8-Train
Time 155
World Koopa Core
Level type Unknown
Enemies Banzai Bills
Rocky Wrenches
Game Progression
Previous level (8-Castlensmbw2) Bowser's Castle
Next level (8-6) Volcano Rapids

Underground Railroad (or World 8-Train) is the first level of Koopa Core from Newer Super Mario Bros. Wii. This level occurs underground on a railroad track moving quickly and featuring lava and poisonous smoke.


  • Its name is a possible reference to the Underground Railroad.
  • In "NEWER SMBW: YE OLDE VIDEO 2", this level is shown with the name "Cavetrain".
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