Eater of Worlds

The Eater of Worlds is similar to the Devourer but with more health and splits into smaller worms as it takes damage. It appears to be made out of multiple Eaters of Souls that are linked to each other.

If you destroy one segment, the eater of world splits and continue fighting in more "worms".

The Eater of Worlds is either summoned in The Corruption with Worm Food, which is made out of Rotten Chunks (dropped by Eater of Souls) and Vile Powder (made from Vile Mushrooms found in corrupted areas); or by destroying three Shadow Orbs (this may occur multiple times).

To defeat this boss, one must destroy every individual segment that makes up its body. The head has 120hp and 0 defense, the body segments have 200hp and 2 defense, and the tail has 300hp and 4 defense. A moving part of it must have at least a head and a tail. If either of those parts die off and there is no body segment to replace it, then the other part that hadn't died yet dies anyway. The Eater of Worlds begins with about 100 segments (needs confirmation).

The Eater of Worlds drops Coins, Demonite Ore, Shadow Scales, Shadowscale Armour, Heart Crystals, the Ball O' Hurt, and the Orb of Light.

A glitch can occur if the Eater of Worlds is summoned by the destruction of a Shadow Orb. If the Eye of Cuthulu is already spawned, the Eater of Worlds dies immediately. It was theorized this is because the game cannot handle mutiple bosses at once, but this video proves that wrong.

Strategy
A very easy and 'early-in-the-game' (after defeating the Eye of Cthulhu) way to deal with the Eater of Worlds is to have a Vilethorn, a few Healing Potions, a decent amount of health, a decent defense, and simply spam the vilethorn. It should be dead in a few minutes.

Before attempting to engage this boss, it is recommended that the player has collected a significant amount of Heart Crystals, at least 6 or 7. The main point of concern during this boss battle is the head, which can deal a sizable amount of damage, but becomes more threatening when the boss is split up into multiple worms, multiplying the damage the player takes. Carrying regular healing potions is recommended, as Lesser Healing Potions are not fast enough to heal at the rate the Eater of Worlds deals damage during the later stages of the battle.

To compensate for a high damage, the Head segment sports a low Health and Defense rating. Even though attacking multiple body parts at once is a viable and effecient strategy, players should focus on the Head segment whenever possible, reducing the risk of the Eater of Worlds splitting up into multiple worms and potentially killing the boss faster.

Recommended weapons, in order of the stage of the game you would probably have them in, are the following: Shuriken, Broadsword, Ball O' Hurt, Grenade, Flintlock Pistol, Vilethorn, Blue Moon, Blade of Grass, Muramasa, Fiery Greatsword, Space Gun, or Sunfury. In addition, timely use of Dynamite will instantly kill any nearby segments of the Eater of Worlds. Unfortunately, this is a very expensive alternative. Excessive amounts of Spiky Balls can also expedite the death of the Eater of Worlds.

Having some sort of tall building, with platform ladder, will make hitting the head easy with any of the ranged weapons as this will make the boss come from straight under you almost every time then be flying in the air to hit for a long duration as well. Shooting downward when at the top of this platform when you hear the digging sound will more than likely get 3-10 hits on the head depending on your weapon.

It has been shown, that by jumping at just the right moment, and aiming the Vilethorn straight down, one can deal massive amounts of damage to the Eater of Worlds, and by doing so to the head, helps reduce risk of it turning into many more Eater of Worlds.

Bugs
A few players have come across a bug where they defeated the Eater of Worlds after they took away most of his thumb|400px|right|No confusion, he can die after you kill enough parts and you die.body parts but then died. The players got all the items and coins he supposedly dropped though. Most of the claims could be confusion however, as defeated segments do drop some loot (including Demonite Ore and Shadow Scales) as the battle goes on.

When the Eater of Worlds runs away after the player has died, a message appears saying that it has been defeated. (If this happens, you are able to get the Dryad NPC to spawn and it should still drop some shadow armour, or it might not).

Many people have found that the Eater of Worlds will follow them back to their spawn point in the event of them dying. This may be considered a bug, as this is the only boss which exhibits this behaviour. This makes The Eater of Worlds a lot easier to defeat.

It and the first bug could be caused because not the whole boss despawns when you die, making you able to fight this boss anywhere, but it still despawns segments when you die, just not everything.

Another rare bug is that the boss will spawn as only a single segment, and nothing else. It will function the same as normal, just very ineffective at killing anyone.

Speed kill:

thumb|400px|left|Speed Kill