Damage

Damage is the attack value dealt by a weapon. The health points (HP) of a player or object must be attacked down to 0 for them to be splatted or destroyed. Players have 100 HP. The Rainmaker shield has 1000 HP. Splash Walls have 600 HP, and lose 85.71 HP per second.

Damage Up vs. Defense Up
The Damage Up and Defense Up abilities interact by canceling the effects of the other. If a weapon starts at dealing 52 damage per shot, it will still do 52 damage if the attacker is wearing 1 main of Damage Up and the defender is wearing 1 main of Defense Up. But if the attacker is wearing no Damage Up and the defender is wearing 3 subs of Defense Up, the damage will be reduced to 49.6, forcing the attacker to land one extra shot in order to splat the defender. This leads to players stacking more and more of these abilities to counter each other.

Falloff Damage
If a player is fighting above their target, or outside of the effective range of their weapon, falloff damage will occur. This means the damage dealt will be less, often making it necessary to hit an opponent extra times to splat them. This happens because ink is less lethal when it loses velocity, which happens if a player is fighting outside of the effective range of their weapon. When a player is fighting at effective range, a crosshair will appear when they point their aiming reticle at someone.

The Slosher and Tri-Slosher are least likely to experience difficulties related to falloff damage because their damage starts very high. Blasters, Chargers, and the Sloshing Machine are not affected by falloff damage at all. Falloff damage can be mitigated by using Damage Up abilities.

List of damage and related stats
 Special Weapons are discussed in their own article.
 * maximum damage, ie. direct hit

Calculating Damage
a = Ability Points of Damage Up = 10 × [Number of Damage Up Main Slots] + 3 × [Number of Damage Up Sub Slots] d = Ability Points of Defense Up = 10 × [Number of Defense Up Main Slots] + 3 × [Number of Defense Up Sub Slots] A = (0.99 × a - (0.09 × a) ^ 2) / 100 D = (0.99 × d - (0.09 × d) ^ 2) / 100 When Damage Up ≥ Defense Up Damage = [base damage] × [1 + (A - D)] When Damage Up < Defense Up Damage = [base damage] × [1 + (A - D) / 1.8]