How to unlock rainbow rift in Crossy castle !!

Hi a new tower was added to Crossy castle and this vid is about how to unlock it
Rough time stamps:
1st: what is rainbow rift
2nd how do you unlock it
3rd about rainbow rift

[@liaxx_editz]

thx

[@euphorbicpear8891]

Np

[@Coolbf1シ]

This Crossy castle is Al castles all for rainbow rift

[@Thecutestpenguinyoureverseen]

Can you reach 100 because can reach 100

[@Thecutestpenguinyoureverseen]

I can reach 100

[@euphorbicpear8891]

What floors on rainbow rift? If yes then i have on multiplayer but on single player my top is 86