Sludgement Day

Sludgement Day is a event in worlds with Corruption. It has a 10% chance to happen, but beating Eater of Worlds in the night triggers the event after that night.
==Effects==
*Corruption spreads pretty fast
*Clentaminator will always spread the Corruption
*All NPCs killed by an enemy in Sludgement Day becomes the Sludge Stalker
*All Mimics become Corrupt Mimics
*Every Corrupted enemy (except Pigrons) which lives underground comes to the surface
*All enemies can break open doors
==Enemies==
*Corrupt Mimics: See Terraria Wiki for more
*Lost: A gigantic corrupted bunny. Sometimes ride by Chewers.
*Chewers: Enemies which when it goes super fast, it inflicts cursed flames. Arabian Chewers have a deadly sword attack.
*Toxikarp: Not to be confused with the item. Found in the waters. They spit out dangerous Purple Cursed Flames.
*Haze: Found in Corrupted Deserts. They create three Arabian Chewers and Desert Spirits everytime they see you. Will act like a stronger Desert Spirit after summoning their three Arabian Chewers and Desert Spirits.
*Winged World Eater: Not actually a World Eater. It's just a corrupted wyvern which spits out Purple Cursed Flames. Found in the sky, rarely.
*Icicorrupt: Round Ice Elementals which shoot projectiles which inflict Purple Cursed Flames and Frozen.
==THE BOSS FIGHT?!?!==
Yes, you'll have to fight...
CORRUPT WIDOW. 
See more on page
==Trivia==
*This is a reference to Zombie Chasers Book 3, Sludgement Day.
**This is also a reference and mix of words, Judgement Day and Sludge.
*If you were to look in the sky, you could see it's a gigantic purple thingie with an eye, eight "trees" and fangs. This is where the boss fight comes from.