Impact

Impact is an attack behavior characterized by only ever having exactly 1 pierce, or in some cases up to a fixed number, regardless of pierce buffs. It is part of the damage types family. Traditionally, this is a property that all Sniper Monkeys possess.

Impact is represented on Bloons Wiki as, the upgrade artwork for Fast Firing in Bloons TD 6, which depicts a bullet.

Typical examples of Impact are Sniper Monkey and COBRA bullets. Lesser known examples include: main darts from Airburst Darts, First Strike Capability initial hits, Ezili's curse initial hits, and Benjamin's Trojan attack. Inferno Ring's meteor is not considered as such due to its unique strong synergy with pierce-boosting buffs.

There is a special case for Bouncing Bullet. That upgrade was nerfed in Version 27.0 to no longer gain extra pierce with pierce buffs, which means its bullet pierce now constitutes as "4 Impacts". The definition for Impact has subsequently changed because of this.

Most attacks do not have this property, as they can be boosted by pierce-buffing sources such as Berserker Brew.