The Corruption

The Corruption is a hazardous biome in Terraria: Otherworld that presents a dark purple theme with limited daylight. The Corruption presents a highly contagious threat to the world, devouring everything--living or dead that is not devoured in the world, corrupting monsters, plants, trees, stones, sands and even dirts into submission. Even if the said land is purified, the threat will stop at nothing to reconquer the land. The Corruption itself, can be considered as the "villain" of the game.

It is the only biome where corrupted blocks (by the prefix of ebon-) are found.