Rainbow Course

Not to be confused with Rainbow Road or Rainbow Ride

Appears in
New Super Mario Bros. 2 when the time limit's last two numbers are the same as the current world.

EXAMPLE: in the World 1 at any stage, both two last digits of the time limit need to be the number 1. The World Mushroom is number 7, Flower 8 and Star being 9. You cannot take your items from your invetory, and/or the Coin Block does not show up.

The course is like this:
The Rainbow Courses are all different, regardless which world's Rainbow Course it is. They always have huge amount of coins and one Giant Coin (worth 100 coins). Sometimes they have red coins, and they can be accessed normally by going through a red coin ring, and if the player collects them all, they get a free Gold Flower for their inventory!