The Hallow is a Hardmode environment that spreads when the Wall of Flesh is beaten. It has a bluish theme to it and is similiar to the corruption but with harder enemies. It can be dangerous for newer Hardmode players. It contains exclusive enemies, items and tiles, but unlike the Corruption, not a boss.
The Hallow appears to be a bluish themed environment, which can easily be recognised by its cyan grass, colourful trees and blue background.
- If an artificial Hallow is created Pre-Hardmode, it will spread slowly like the corruption.
- The Hallow cannot corrupt Mud, so Jungles are safe from the spread.