Eater of Worlds

Eater of Worlds

Map icon

Statistics

Type	Boss – Burrowing Enemy
Environment	The Corruption
Max Life	11,725 / 17,640 / 18,816 / 17,346 / 22,464 / 23,808 / 21,948
KB Resist	100%
Inflicts debuff	Weak 5% chance
Debuff duration	10 minutes
Debuff tooltip	Physical abilities are decreased
Immune to

Resistances

Cold	Vulnerable
Water	-
Sickness	Vulnerable
Electricity	-
Heat	Vulnerable

• Item (Quantity)Rate
• Shadow Scale (50-100 / 100-150 )
  100%
• Demonite Ore (100-250)
  100%
• Worm Scarf
  100%
• Lesser Healing Potion (5-15)
  100%
• Eater's Bone
  5%
• Eater of Worlds Mask
  14.29%
• Eater of Worlds Trophy
  10%
• Thank You
  1%
• The Eater of Worlds (Lore)(Always on first kill)
  100%
• Treasure Bag(Eater of Worlds)
  100%
• Writhing Remains(In Master or Revengeance Mode only)
  25% / 25%
• Eater of Worlds Relic(In Master or Revengeance Mode only)
  100% / 100%

Sounds

Hurt

Killed

Digging

If you were looking for the Eater of Worlds on the vanilla wiki, click here.

"That measly thing, devouring a planet? Ridiculous."

The Eater of Worlds is a Pre-Hardmode boss that is fought in The Corruption.

Spawn

The Eater of Worlds is summoned using Worm Food while in the Corruption or by destroying 3 Shadow Orbs that spawn in the Underground Corruption. It can be summoned at any time of day.

Segments

Eater of Worlds Head

Statistics

Type	Burrowing Enemy
Environment	The Corruption
Damage	38 / 55 / 77 / 99 / 165 (Contact) 60 / 76 / 114 (Cursed Fireball)
Max Life	175 / 245 / 294 / 312 / 372
Defense	2 / 4 / 8
KB Resist	100%
Inflicts debuff	Cursed Inferno 100% chance
Debuff duration	1-3 seconds (Cursed Fireball)
Debuff tooltip	Losing life
Inflicts debuff	Shadowflame 100% chance
Debuff duration	2 seconds (Shadow Fireball)
Debuff tooltip	Losing life

Sounds

Cursed Fireball

Shadow Fireball

Eater of Worlds Body

Statistics

Type	Burrowing Enemy
Environment	The Corruption
Damage	15 / 24 / 32 / 40 / 60 (Contact) 64 / 96 (Vile Spit)
Max Life	175 / 245 / 294 / 312 / 372
Defense	4 / 6
KB Resist	100%
Inflicts debuff	Brain Rot 100% chance
Debuff duration	3 seconds (Vile Spit)
Debuff tooltip	Your neurons are popping like corn kernels

Sounds

Vile Spit

Eater of Worlds Tail

Statistics

Type	Burrowing Enemy
Environment	The Corruption
Damage	12 / 16 / 24 / 32 / 48
Max Life	175 / 245 / 294 / 312 / 372
Defense	8 / 10
KB Resist	100%

Behavior

Has increased damage reduction for a few seconds after spawning, to prevent cheap kills. It has 67 / 72 / 64 / 59 / 79 / 70 / 62 segments. Vile Spit fired from its body segments will always inflict the Weak debuff for 1 second, with a 50% chance to inflict it for 2 seconds, a 20% chance to inflict it for 12 seconds, and a 10% chance to inflict it for 1 minute.

In Expert Mode

• Segment count decreased from 72 to 64.

In Revengeance Mode

• Eater of Worlds will become enraged if fought outside of the Underground Corruption, gaining the ability to fly towards the player if the boss cannot reach them.
• Individual segments do not drop Demonite Ores or Shadow Scales when killed.
• Splitting segments are able to regain health based on their overall health.
• Always fires vile spit and fire rate increases as its health lowers.
• Fires cursed fireballs when below 80% health and fire rate speed decreases as health lowers.
• Slightly increased velocity for each time a new head spawns, but it will only gain this velocity if it is far enough away from the player.
• Gains increased speed and acceleration when below 20% health.
• Increased speed and acceleration boosts when below 40%, and again when below 20% health.

In Death Mode

• Segment count decreased to 59 segments. All segments begin firing vile spit when 62 segments remain. Head segments begin firing cursed fireballs at 51 segments.
• Can fly at players who are out of reach easier. It will also get increased acceleration and top speed as its health decreases.
• The head segment as well as every other body segment gains 50% DR and double defense.

In Master Mode

• Segment count increased to 77.
• Enrage distance is decreased.
• Fires vile spit more frequently.
• Burrow speed is increased.

In Revengeance Master Mode

• Four worms are spawned at once.
• Segment count per worm is increased to 72.
• Gains increased speed at all times.
  • Gains increased speed when below 10% health, and again when below 5%.
• Gains predictive movement when below 5% health.
• Burrow speed is increased.
• Fires vile spit more frequently.
• Fires cursed fireballs at all times, and the rate at which fireballs are shot out is massively increased if the boss has recently been damaged.
• Enrage distance is decreased.
  • This is further decreased under 10% health.

In Death Master Mode

• Segment count per worm decreased to 62.
• Slightly decreased its maximum falling speed.
• Head segments push away from each other when colliding.
• Head segments fire shadowflame fireballs instead of cursed fireballs that go through tiles.

During the Boss Rush

• Maximum health increased to 2,500,000 / 3,500,000 / 4,550,000 .
• Becomes immune to all debuffs except Enraged, Kami Flu, and Shellfish Claps.
• Has 99% damage reduction for the first ten seconds after spawning, which smoothly scales down to 60%.
• It is less aggressive.

Aftermath

• The Merchant will begin selling Healing Potions and Mana Potions.

Resistances

• All segments take reduced damage from most non-minion piercing projectiles. Each hit decreases the damage of the next hit by 12%, until the eighth hit onwards which deal 20% of original damage.
• All segments take 20% damage from grenade-type projectiles. A list of affected projectiles is below.

Resisted grenades
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• Additionally, all segments take:
  • 50% damage from the Demon Scythe and all true melee hits.
  • 60% damage from the Sky Glaze's feathers.

Tips

For more elaborate strategies on defeating the Eater of Worlds, including weapon and arena recommendations, see Guide:Eater of Worlds strategies.

Trivia

• If the Vanilla Calamity Mod Music is enabled, the vanilla Boss 1 theme will be replaced with Menace of the Chasms, which was composed by Heart Plus Up!.

History

edit

These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.

• 2.0.4.003:
  • Now always targets the same player until they die. Body segments still fire vile spit at the closest player.
  • Nerfed damage reduction in Boss Rush from 80% to 60%.

• 2.0.4.002:
  • Buffed head damage in Master Mode from 132 to 165 , and tail damage from 36 to 48 . Buffed cursed fireball damage from 108 to 114 .
  • Fixed it always taking 1 damage outside of Revengeance Mode.

• 2.0.4.001:
  • Decreased number of segments in Revengeance and Death Mode from 79 / 69 to 64 / 59 . This nerfs overall health from 11,725 / 17,640 / 23,226 / 20,286 / 22,464 / 29,388 / 25,668 to 11,725 / 17,640 / 18,816 / 17,346 / 22,464 / 23,808 / 21,948 .
  • Buffed head damage from 25 / 55 / 77 / 88 / 132 to 38 / 55 / 77 / 99 / 132 , and body damage in Classic Mode from 15 to 18. Changed tail damage from 10 / 16 / 24 / 32 / 42 to 12 / 16 / 24 / 32 / 36 .
  • Buffed cursed fireball damage from 26 / 44 / 60 / 68 / 90 to 26 / 44 / 60 / 76 / 108 .
  • Can now turn the Calamity Boss Health Bar red when enraged outside of Revengeance Mode.
  • No longer uses a global scaling contact damage formula based on boss velocity. Instead, it now uses a different formula for scaling contact damage based on velocity, which scales from half damage to full damage on the head, and 0 to full damage on the body and tail.
  • Body and tail are no longer immune to lifesteal.
  • Vile spit now inflicts Brain Rot for 3 seconds. It also always inflicts Weak for 1 second, with a 50% chance to inflict it for 2 seconds, a 20% chance to inflict it for 12 seconds, and a 10% chance to inflict it for 1 minute.
  • Revengeance Mode changes:
    • Splitting segments now regain health based on overall health.
    • Surface enrage no longer triggers when in front of unsafe Ebonstone walls.
    • Now always fires vile spit instead of only firing them below 90% health, and fire rate now increases as its health lowers.
    • Now starts firing cursed fireballs when below 80% health instead of 75%, cursed fireballs always inflict Cursed Inferno for 1 second, fire rate now gets slower as health lowers, and Death Mode no longer increases fire rate.
    • Slightly increased velocity given when a new head spawns, but it now only gains this velocity if far enough away from the player.
    • Now gains increased speed and acceleration when below 20% health instead of 10%.
    • Increased speed and acceleration boosts given when below 40% and 20% health.
  • Slightly decreased its maximum falling speed, heads now push away from each other, and fires shadowflame fireballs instead of cursed fireballs in Death Mode.
  • Now moves and accelerates faster, starts flying at a smaller distance, and shoots vile spit twice as fast in Master Mode.
  • Now spawns as 4 smaller worms, gains an extra 6 / 3 segments, always fires cursed fireballs and has its first speed and acceleration boost, gains a quick burst of speed and accelerates its cursed fireball timer when a head is hit, gains its second speed and acceleration boost at 50% health instead of 20%, gains additional boosts to speed and acceleration at 10% and 5% health, and predicts the player's movement below 5% health in Revengeance Master Mode.
  • Initial damage reduction in Boss Rush now smoothly scales down from 99% to 80%, and decreased aggression in Boss Rush.
  • No longer takes 70% damage from Jester's Arrows.
  • Fixed cursed fireballs not receiving damage values in Classic and Expert Mode.

• 2.0.3.007: Fixed its extra loot not appearing on the Boss Checklist mod.

• 2.0.3.005: Segments in Revengeance Mode or higher can no longer fire Vile Spit or cursed fireballs if the player is too close to them.

• 2.0.2.001: Fixed it not dropping Worm Scarf in Classic Mode.

• 2.0.1.001:
  • Decreased velocity of Cursed Fireball projectiles by 41.67% in Revengeance and Death Modes.
  • Cursed Fireball velocities are now doubled while enraged.
  • Significantly increased the brightness of Vile Spit projectiles in all modes.

• 2.0.0.001: Now takes 70% damage from Jester's Arrows.

• 1.5.1.003:
  • Every other body segment, and the head segments are now immune to all debuffs in Death Mode.
  • Head and tail segments no longer have increased defense and damage reduction in Malice Mode.
    • Instead, head segments and every other body segment has 50% damage reduction and 2x defense in Death Mode.
    • This has the effect of causing it to split more often in Death Mode.
  • Decreased total number of segments in Death Mode from 82 to 67.

• 1.5.1.001:
  • Buffed health from 150 / 210 / 273 (7500 / 10,500 / 21,567 / 22,932 total) to 175 / 245 / 294 (8750 / 12,250 / 23,226 / 24,696 total).
  • Now fires Cursed Flames in the direction its mouth faces instead of aiming towards the player.
  • In Revengeance Mode, segments no longer drop Demonite Ore or Shadow Scales. The treasure bag now contains an additional 120-240 Demonite Ore and 60-120 Shadow Scales.
  • Now vulnerable to cold, sickness, and heat debuffs.
  • Now drops Worm Scarf regardless of world difficulty.

• 1.5.0.003:
  • Segments now take 60% damage from Sky Glaze and Feather Crown feathers, and 50% damage from Demon Scythe projectiles.
  • Segments can now drop Hearts when they are killed on Revengeance Mode.
  • Fixed a bug that prevented it from being marked as dead when killed on Revengeance Mode.

• 1.5.0.001:
  • Nerfed Boss Rush health from 2,500,000 / 3,500,000 / 4,550,000 to 250,000 / 350,000 / 455,000 .
  • No longer drops Hearts in Revengeance or Malice Mode.

• 1.4.5.004:
  • No longer despawns outside of the Corruption but instead enrages in Revengeance Mode.
  • Now less aggressive when fought in the Underground Corruption in Revengeance Mode.
  • Now smaller in Death Mode.

• 1.4.5.003:
  • Can now fly at players out of reach more easily, and increases in velocity and acceleration as its health decreases in Death Mode.
  • Now splits during Boss Rush.
  • Fixed a bug that caused it to desync between clients, rarely become invisible, and have near-infinite health in multiplayer.

• 1.4.3.001:
  • Buffed head damage from 22 / 48 / 60 / 69 to 22 / 48 / 60 / 72 .
  • Nerfed Vile Spit damage from 65 / 74 to 65 .
  • Nerfed cursed flame damage from 60 / 69 to 60 / 68 .
  • Death Mode changes:
    • Transitions into Phase 2, 3, and 4 immediately instead of below 90%, 75%, and 40% health.
    • Transitions into Phase 5 below 33% health instead of 10%.
    • Fires projectiles at the highest rate immediately, instead of gradually increasing rate as health lowers.
    • Moves at the highest speed immediately, instead of gradually speeding up as health lowers.
    • Slightly decreased maximum speed and acceleration.
    • Decreased player tracking distance when flying.

• 1.4.2.106:
  • Buffed head, body, and tail's Boss Rush healths from 20,000, 30,000, and 40,000 all to 2,500,000.
  • Fixed it not spawning correctly during Boss Rush.

• 1.4.2.105:
  • Reworked Revengeance Mode AI:
    • Now gets faster based on how many segments are left.
    • Now fires less cursed flames and vile spits later in the fight.
    • No longer gets a few seconds of extreme damage reduction when a head dies.
    • Now takes 60% damage from non-minion piercing projectiles.
    • No longer has an increased segment count compared to Expert Mode.
    • Worms will not be staggered when their head is killed, and will keep moving.
  • No longer reflects projectiles in Death Mode.

• 1.4.2.002: Fixed a resistance bug.

• 1.4.2.001:
  • Nerfed head Boss Rush health from 40,000 to 20,000.
  • Nerfed body Boss Rush health from 60,000 to 30,000.
  • Nerfed tail Boss Rush health from 80,000 to 40,000.
  • Nerfed contact damage modifier while enraged from 5x to 2.25x.
  • Now takes 1% damage from all sources for 8 seconds after spawning.
  • Body and tail segments can no longer be lifestealed off of.

• 1.4.1.001:
  • Buffed head Boss Rush health from 20,000 to 40,000.
  • Buffed body Boss Rush health from 30,000 to 60,000.
  • Buffed tail Boss Rush health from 40,000 to 80,000.
  • Buffed Boss Rush damage modifier from 3.5x to 5x.
  • No longer deals extra contact damage in Revengeance Mode.

• 1.4.0.001: Lowered projectile fire rates in Revengeance Mode.

• 1.3.4.101:
  • Buffed health modifier from 1.25x / 1.35x to 1.3x / 1.4x .
  • Body segments no longer have 10% damage reduction, and tail segments no longer have 20% damage reduction.

• 1.3.4.001: Nerfed health modifier from 1.35x / 2.05x to 1.25x / 1.35x .

• 1.3.3.001:
  • Now takes 80% damage from infinitely piercing projectiles instead of 25% in Revengeance Mode.
  • No longer divides projectile damage by the amount of times that said projectile pierces in Revengeance Mode.

• 1.2.4.101: Buffed Death Mode health modifier from 1.35x to 2.05x .

• 1.2.4.002:
  • Head now reflects projectiles in Death Mode.
  • No longer resists Spears and projectiles which act like them, such as Arkhalis.
  • Buffed Death Mode health modifier from 1.25x to 1.35x .

• 1.2.3.005: Head now gains a 1.85x damage modifier, and body and tail segments gain a 1.5x damage modifier.

• 1.2.3.002: Now gains a 1.5x health modifier in Death Mode

• 1.2.0.002:
  • Head now inflicts Marked for Death for 3 seconds in Revengeance Mode.
  • No longer fires cursed flame projectiles more often if the player has high Stress.

• 1.2.0.001:
  • Now gains a 1.25x health and damage modifier in Revengeance Mode.
  • Now cuts the damage of infinitely piercing projectiles by 50% instead of 20%.
  • Head now inflicts Horror for 3 seconds, body inflicts Horror for 2 seconds, and tail inflicts Horror for 1 second in Revengeance Mode.
  • Now has a 2% chance to drop Laudanum or Stress Pills in Revengeance Mode.

• 1.1.7.801: The status message "Rotten cysts are oozing from the corrupt land..." now appears when defeated.