The Downwards Sprial

The Downwards Spiral is a Post-Earth Lord Biome, meant to look really trippy and strange. It plays a song similar to the one in Clankers Cavern from Banjo-Kazooie, and has a neon green, smoggy sky. All water is replaced with Suspicious Sludge, which also drips down from cavern roofs. The underground background has a rainbow spiral in the background. Upon killing every previous boss there was, Millions Mansion spawns directly in the center of the biome, allowing you to enter, as long as you have the Key of Karma.

Blocks
Mirage Grass

Spinstone

Everyall Ore

Spiralwood

Surface/Underground
Millions Minion

DestructBug

Whirlo

Misttron

Underground
Hoperon

MilliBot

Loopslash

Bosses
GigantiGoop

MILLIONS