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Defense

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Defense is a player statistic that determines how much damage can be taken per hit. Defense can be increased by wearing armor and accessories, and temporarily boosted by various buffs.

  • In Classic Mode, incoming damage is reduced by half of defense rounded up.
  • In Expert Mode, incoming damage is reduced by 75% of defense rounded up.
  • In Master Mode, incoming damage is reduced by 100% of defense.

No hit can be reduced below 1 damage (with the exception of a player whose multiplayer ally is wearing a Paladin's Shield).

Some forms of damage are impossible to reduce through defense. Damage from health-draining debuffs like Cursed Inferno or drowning in water are not reduced by defense. Damage taken from lava, however, can be reduced through defense.

Mechanics[edit | edit source]

Defense gives a flat reduction in damage, i.e. damage is reduced by a fixed amount per hit (as opposed to a multiplicative damage reduction, which would reduce damage by a percentage).

Normal Mode formula[edit | edit source]

The formula is: net damage = attack damage - (defense * 0.5)

For example:

  • With 20 defense, a 40 damage attack is reduced by 10, resulting in 30 damage taken: 40 - (20 * 0.5) = 30
  • With 30 defense, a 40 damage attack is reduced by 15, resulting in 25 damage taken: 40 - (30 * 0.5) = 25

Expert Mode formula Desktop, Console, and Mobile versions[edit | edit source]

In expert mode, the formula is: net damage = attack damage - (defense * 0.75)

For example:

  • With 20 defense, a 40 damage attack is reduced by 15, resulting in 25 damage taken: 40 - (20 * 0.75) = 25
  • With 30 defense, a 40 damage attack is reduced by 23, resulting in 17 damage taken: 40 - (30 * 0.75) = 17

Note that in Expert mode only the player's defense follows the formula. Enemies will still take the same amount of damage as in normal mode.

Master Mode formula Desktop version[edit | edit source]

In master mode, the formula is:net damage = attack damage - defense

For example:

  • With 20 defense, a 40 damage attack is reduced by 20, resulting in 20 damage taken: 40 - 20 = 20
  • With 30 defense, a 40 damage attack is reduced by 30, resulting in 10 damage taken: 40 - 30 = 10

Enemies[edit | edit source]

Enemies have a defense statistic just like players do, but they do not gain more protection from defense in Expert ModeDesktop, Console, and Mobile versions or Master ModeDesktop version. Enemies will always reduce incoming damage by 50% of their defense regardless of difficulty: net damage = attack damage - (defense * 0.5)

Examples:

Weapon Green SlimeGreen Slime
0 defense
Chaos ElementalChaos Elemental
30 defense
PaladinPaladin
50 defense
SharkronSharkron
100 defense
Gold BroadswordGold Broadsword
13 damage
13 1 (-2) 1 (-12) 1 (-37)
MeowmereMeowmere
200 damage
200 185 175 150

Altering defense[edit | edit source]

Armor and Accessories[edit | edit source]

A player's defense score can be increased by equipping armor and accessories. Armor usually consists of three items, granting an additional bonus, the Set Bonus, which may increase the defense score further, if all three pieces match. Some accessories grant direct defense boosts (see the following table), but all accessories can also be reforged to a maximum of +4 defense per accessory.

See armor for detailed defense information about every piece of armor.

The following accessories increase the player's defense:

Item Accessory Defense
ShackleShackle 1
Cobalt ShieldCobalt Shield 1
Obsidian SkullObsidian Skull 1
Shield of CthulhuShield of CthulhuDesktop, Console, and Mobile versions 2
Obsidian ShieldObsidian Shield 2
Moon CharmMoon Charm 3 (only during the night)
Moon ShellMoon Shell 3 (only during the night)
Moon StoneMoon Stone 4 (only during the night)
Sun StoneSun Stone 4 (only during the day)
Celestial StoneCelestial Stone 4
Ankh ShieldAnkh Shield 4
Paladin's ShieldPaladin's Shield 6
Frozen Shield
Frozen Shield
6
Celestial ShellCelestial ShellDesktop, Console, and Mobile versions 4 (during the day)
7 (during the night)
Flesh KnucklesFlesh KnucklesDesktop, Console, and Mobile versions 7
Berserker's GloveBerserker's GloveDesktop version 7
Hero ShieldHero ShieldDesktop version 7
Frozen Turtle ShellFrozen Turtle Shell Desktop, Console, and Mobile versions 0 until below 50% health when it reduces total damage by 25%
Old-gen console version3DS version 30 (when below 25% health)

Buffs and Debuffs[edit | edit source]

Buffs and debuffs can temporarily alter a player's or an enemy's defense. Currently, there is no buff increasing enemies' defense. A player's defense cannot be reduced to fall below 0.

Buff / Debuff Temporary Defense
Well FedWell Fed 2
Plenty SatisfiedPlenty SatisfiedDesktop version 3
Exquisitely StuffedExquisitely StuffedDesktop version 4
The Bast DefenseThe Bast DefenseDesktop version 5
Dryad's BlessingDryad's BlessingDesktop, Console, and Mobile versions 8
IronskinIronskin 8
TipsyTipsy -4
WeakWeak -4
Ichor (debuff)Ichor -20
Betsy's CurseBetsy's CurseDesktop and Console versions -40
Broken ArmorBroken Armor -50%

Damage reduction boosts[edit | edit source]

All damage reduction boosts (except Warmth Potion) affect damage taken after defense. Also, Solar Blaze, Beetle Endurance, Warmth and Paladin's Shield calculate damage multiplicative with each other and other effects calculate additive.

Buff Source Damage reduction bonus
Solar BlazeSolar BlazeDesktop, Console, and Mobile versions Solar Flare armorSolar Flare armorDesktop, Console, and Mobile versions 20%
Beetle EnduranceBeetle Endurance Beetle armorBeetle armor 15% / 30% / 45%
Paladin's Shield (buff)Paladin's Shield Paladin's ShieldPaladin's Shield (when worn by another player on the team) 25% (only active when the wearer is above 25% health)
EnduranceEndurance Endurance PotionEndurance Potion 10%
Ice BarrierIce Barrier Frozen Turtle ShellFrozen Turtle Shell, Frozen ShieldFrozen ShieldDesktop version Desktop, Console, and Mobile versions 25% (when below 50% health)
Old-gen console version3DS version 0
WarmthWarmthDesktop, Console, Old-gen console, and Mobile versions Warmth PotionWarmth PotionDesktop, Console, Old-gen console, and Mobile versions 30% (reduces damage only from cold-themed enemies)
Item Source Damage reduction bonus
Chlorophyte MaskChlorophyte Mask(with whole set) Crafting 5%
Turtle armorTurtle armor Crafting 15%
Solar Flare armorSolar Flare armorDesktop, Console, and Mobile versions Crafting 12%
Worm ScarfWorm ScarfDesktop, Console, and Mobile versions Treasure Bag (Eater of Worlds)Treasure Bag (Eater of Worlds)Desktop, Console, and Mobile versions 17%

Armor Penetration Desktop, Console, and Mobile versions[edit | edit source]

Armor penetration is a statistic that reduces the defense of the player's targets. For instance, a Pixie normally has 20 defense. If the player has 5 Armor penetration, then the Pixie will be taken to have 15 defense instead.

Source Armor penetration bonus
Shark Tooth NecklaceShark Tooth NecklaceDesktop, Console, and Mobile versions 5
Stinger NecklaceStinger NecklaceDesktop version 5
Sharpening StationSharpening StationDesktop, Console, and Mobile versions 12 (for melee weapons only)
Blade StaffBlade StaffDesktop version 25

Max defense[edit | edit source]

The highest possible defense uses the following setup:

Desktop version Desktop version[edit | edit source]

Therefore, the maximum defense is: 82 + 54 + 25 + 20 = 181 / 82 + 64 + 25 + 20 = 191 / 82 + 72 + 25 + 20 = 199.

Console version Console version[edit | edit source]

Therefore, the maximum defense is: 79 + 48 + 18 + 20 + 7 = 172 / 79 + 56 + 18 + 20 + 7 = 180.

Mobile version Mobile version[edit | edit source]

Therefore, the maximum defense is: 79 + 48 + 18 + 7 = 152 / 79 + 56 + 18 + 7 = 160.

Old-gen console version Old-gen console version and 3DS version 3DS version[edit | edit source]

Therefore, the maximum defense is: 76 + 42 + 10 = 128

Damage reduction[edit | edit source]

Damage reduction is calculated after defense.

The highest damage reduction possible is 73.6% (or 81.52% against cold-themed enemies), using the following setup:

Desktop version Desktop version, Console version Console version, and Mobile version Mobile version[edit | edit source]

Therefore, the maximum damage reduction is: (1 - 0.45) * (1 - (0.25 + 0.17 + 0.1)) = 0.264 = 26.4% damage taken = 73.6%

The maximum damage reduction against cold-themed enemies is: (1 - 0.45) * (1 - 0.3) * (1 - (0.25 + 0.17 + 0.1)) = 0.1848 = 18.48% damage taken = 81.52% (note that the Warmth Potion is calculated before defense).

Old-gen console version Old-gen console version[edit | edit source]

  • Armor (multiplicative)
  • Accessories and Potions (additive)
    • Endurance Potion – 10% reduction
    • Warmth Potion - 30% reduction against cold-themed enemies
    • This does not include the Paladin's Shield buff, since its damage reduction occurs before defense, and all others occur after defense.

Therefore, the maximum damage reduction is:(1 - 0.45) * (1 - 0.1) = 0.495 = 49.5% damage taken = 50.5%

The maximum damage reduction against cold-themed enemies is: (1 - 0.45) * (1 - (0.1 + 0.3)) = 0.33 = 33% damage taken = 66%

3DS version 3DS version[edit | edit source]

  • Armor (multiplicative)
  • Accessories and Potions (additive)
    • Endurance Potion – 10% reduction
    • This does not include the Paladin's Shield buff, since its damage reduction occurs before defense, and all others occur after defense.

Therefore, the maximum damage reduction is: (1 - 0.45) * (1 - 0.1) = 0.495 = 49.5% damage taken = 50.5%

Trivia[edit | edit source]

  • Although not possible in-game, if a piece of armor were to gain a modifier, it would apply the effects just like an accessory would. For example, a set of Warding modified armor would add 12 defense total; each piece adds 4 defense to the total.
  • Damage dealt by enemies is doubled in Expert mode and tripled in Master Mode compared to normal mode. This means that despite the increase in damage reduction from defense in those modes, defense is still generally less effective than in normal mode.
  • If the player somehow has negative defense, they will take more damage according to the damage taken added with half / three quarter /full amount the defense.