Rainbow Rainbow is the final level of Into the Fourth Dimension . It takes a form of a giant, ringed planet colored by many bright colors of the spectrum, making it easy to find in the black ocean of space.
- Past a rainbow path: Collected by MarioGamer56
- Above some moving platforms underground: Collected by StarSupporterLouie
- Defeating Eyerainbow : Collected by NICK54222
- Going through 5 rings: Collected by mariomario678910 (helped by ironhide2919 , Casper1563 , ikarosfan and Firemario1000; Not everyone made it through, such as KirbyRider1337)
- 8 red coins: Collected by thesplashinglugia (helped by philgta4 , DynamiteRacer200 , SuperYoshi419 , gillburgerEXE2334 , Lugiaboy2 , galleon360 and MsSuperMario65 )
- D-Star round in secret cage in underground lab through pipe: Collected by luigiluigi543212345
- 100 coins: Collected by xFireLuigi600x