Main Power Up

Main Power Up is an ability in Splatoon 2, added in Version.

This ability is available in both primary and secondary gear slots and has different effects on each main weapon, even inside the same weapon class.

All gear previously available in the shops that had Cold-Blooded were changed to have Main Power Up instead when it was added.

Effects
The effects of Main Power Up are displayed on the Equipment screen on the info tab for the abilities for the currently selected main weapon. The benefits from Main Power Up vary from weapon to weapon. Weapons which acquire increased damage are incapable of decreasing the number of hits required to splat an undamaged opponent, but the damage total for each hit is slightly increased.

Some weapons, like the Splattershot Jr., are granted an increase in ink coverage, allowing the user to get their special weapon quicker. This stacks with Special Charge Up but not with Tenacity since the quick special charge only counts when inking the ground.

Shooter

 * - Increases damage by up to 25%.
 * - Increases ink coverage by up to 20.2%.
 * - Increases damage by up to 25%.
 * - Increases ink coverage by up to 16.7%.
 * - Increases shot accuracy when firing while jumping by up to 50%. Increases accuracy while on the ground by up to 25%.
 * - Increases shot accuracy when firing while jumping by up to 50%. Increases accuracy while on the ground by up to 25%.
 * - Increases ink coverage by up to 13.8%. Increases accuracy while on the ground by up to 25%.
 * - Increases damage by up to 20.8%.
 * - Increases damage by up to 25%.
 * - Increases bullet velocity and range by up to 8.5%. Increases accuracy while on the ground by up to 30%.
 * - Increases high-damage radius of explosions by up to 200% and increases in coverage when fired into the air.
 * - Increases shot accuracy when firing while jumping by up to 40%.
 * - Increases shot accuracy when firing while jumping by up to 37.5%.
 * - Increases shot accuracy when firing while jumping by up to 50%.
 * - Increases shot accuracy when firing while jumping by up to 50%. Increases the radius of explosion by up to 5.9%.
 * - Increases shot accuracy when firing while jumping by up to 50%. Increases the radius of explosion by up to 5.9%.
 * - Increases damage by up to 23.4%.
 * - Increases damage by up to 24%.
 * - Increases damage by up to 30% while tapping, and 20% while holding.

Roller

 * - Increases damage by up to 15%.
 * - Increases damage by up to 15%.
 * - Increases damage by up to 15%.
 * - Increases damage by up to 15%.
 * - Increases movement speed by up to 5%. Increases ink trail width by up to 48%.
 * - Increases movement speed by up to 12%. Increases ink trail width by up to 60%.

Charger

 * - Increases range by up to 8.9%. Increases ink coverage by up to 24%.
 * - Increases damage by up to 20%.
 * - Increases damage by up to 20%.
 * - Increases range by up to 5.2%. Increases ink coverage by up to 17%.
 * - Increases range by up to 4.8%. Increases ink coverage by up to 17%.
 * - Increases damage by up to 18.9%.
 * - Increases damage by up to 15%.

Slosher

 * - Increase damage from higher grounds.
 * - Increases ink coverage by up to 25%.
 * - Increases ink coverage by up to 15%.
 * - Increases ink coverage by up to 20%.
 * - Increases ink coverage by up to 30%.

Splatling

 * - Increases duration of firing by up to 30%
 * - Increases duration of firing by up to 24%.
 * - Increases damage by up to 10% when not fully charged and up to 20% when fully charged.
 * - Increases damage by up to 10%
 * - Increases duration of firing by up to 30%

Dualie

 * - Increases damage by up to 20%.
 * - Increases damage by up to 16%.
 * - Increases damage by up to 20%.
 * - Increases damage by up to 20%.
 * - Increases damage by up to 20%.

Brella

 * - Speeds up Brella canopy regeneration by up to 46%.
 * - Increases Brella canopy durability by up to 43%.
 * - Speeds up Brella canopy regeneration by up to 44%.

Gear
Main Power Up is the main ability of:

Calculating damage
A = ability points = 10 × [Main Power Up main slots] + 3 × [Main Power Up sub slots] B = (3.3 * A - 0.027 * A^2) / 100 C = (mid - min) / (max - min) D = min⁡ + ( max - min ) * lerpN(B, C) result = [base value] * D

and  can be found in the game's parameters as DamageRate_MWPUG_High and DamageRate_MWPUG_Mid. For Main Power Up,  is always 1.0.

lerpN is an interpolation function where: If C = 0.5 then lerpN(B, C) = B If B = 0.0 then lerpN(B, C) = B If B = 1.0 then lerpN(B, C) = B If C ≠ 0.5 then lerpN(B, C) = e^(-(ln⁡(B) × ln⁡(C)) / ln⁡(2))

For example, Splat Dualies with two primary Main Power Up slots and one secondary Main Power Up slot. Given: main slots = 2 sub slots = 1 min = 1.0 mid = 1.06 max = 1.16 base damage = 30

A = 10 × 2 + 3 × 1 = 23 B = (3.3 * 23 - 0.027 * 23^2) / 100 = 0.503985906 C = (1.06 - 1) / (1.16 - 1) = 0.375 C ≠ 0.5, so lerpN(B, C) = e^(-(ln⁡(B) × ln⁡(C)) / ln⁡(2)) effect = 1 + ( 1.16 - 1 ) * e^(-(ln⁡(0.503985906) × ln⁡(0.375)) / ln⁡(2)) = 1.080637745 result = 30 * 1.080637745 = 32.41913235 This would appear as 32.4 damage in-game.

Damage cap
After the damage cap is reached, adding more Main Power Up does not increase maximum weapon damage but does continue to increase falloff damage. For example, even if a Splattershot Pro reaches 49.9 damage on direct hits within effective range, the lower-damage hits that occur out of effective range still continue to be boosted by using more Main Power Up.


 * One main slot = 10 AP
 * One sub slot = 3 AP

Trivia

 * Main Power Up is one of the two abilities to be added to Splatoon 2 post-release. However, it remains the only truly unique ability, unlike Bomb Defense Up DX.
 * Main Power Up is the only ability in Splatoon 2 to be favored by two brands - Toni Kensa and Annaki.