Damage is the process by which a Bloon loses health and/or layers in the Bloons TD series, Bloons Supermonkey series, and Bloons Pop!. Damage is primarily dealt by projectiles or status effects.

Damage is often described in descriptive text as the amount of "layers popped", which, while not incorrect for most Bloon types, is inaccurate for Bloons with multiple points of health.

Layer skipping

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Damage types

Main article: Damage type

Damage types are a property of damage that determines which Bloons the damage can or cannot be dealt to. This concept was introduced in the mobile version of Bloons TD 5 and only appears in the Bloons TD series and Bloons Pop!, although similar mechanics exist in prior games.

Damage over time

Main article: Damage over time
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Bonus damage

Some attacks deal bonus damage to Bloons that meet certain conditions. They can deal extra damage to:

Term Applies to Appears in Notes
MOAB damage MOAB-Class Bloons (including Boss Bloons) Bloons TD 4
Bloons TD 5
Bloons TD Battles
Bloons Monkey City
Bloons TD 6
Bloons Adventure Time TD
Bloons TD Battles 2
Bloons Super Monkey
Bloons Supermonkey 2
Boss damage Boss Bloons Bloons Monkey City (Flash)
Bloons TD 6
Bloons Pop!
In Bloons Pop!, some attacks deal reduced damage to Boss Bloons.
BAD damage BADs Bloons TD 6
Ceramic damage Ceramic Bloons Bloons TD 5
Bloons TD Battles
Bloons Monkey City
Bloons TD 6
Bloons Adventure Time TD
Bloons TD Battles 2
Bloons Super Monkey
Bloons Supermonkey 2
In BTD6, some attacks that deal extra Ceramic damage also apply to Dreadbloon's Ceramic Armor Shell, while others do not. For example, Deadly Precision does apply to the Ceramic Armor Shell, but Spiked Balls does not. This is never stated within the game itself and there does not appear to be a consistent pattern as to which sources of extra Ceramic damage do and do not apply to it.
Lead damage Lead Bloons
DDTs
Bloons TD 6
Bloons TD Battles 2
Camo damage Camo Bloons Bloons TD 6
Bloons Adventure Time TD
Bloons TD Battles 2
Regrow damage Regrow Bloons Bloons TD 6
Bloons Adventure Time TD
Fortified damage Fortified Bloons Bloons TD 6
Bloons Adventure Time TD
Bloons TD Battles 2
In BTD6, some attacks specifically only deal extra damage to Fortified MOAB-Class Bloons, and not Fortified Lead Bloons, Ceramic Bloons, or Golden Bloons.
Zombie damage Zombie Bloons Bloons Adventure Time TD
Ghost damage Ghost Bloons Bloons Adventure Time TD
Frozen damage Frozen Bloons Bloons Adventure Time TD
Stunned damage Stunned Bloons Bloons TD 6
Bloons TD Battles 2
Stickied damage Sticky bombed Bloons Bloons TD 6
Bloons TD Battles 2
Shocked damage Shocked Bloons Bloons TD 6
Bloons TD Battles 2
In BTD6, Dartling Gunners only deal extra damage to Laser Shocked Bloons afflicted with the same "tier" of the effect. For example, Laser Cannon only deals extra damage to Bloons shocked by itself and other Laser Cannons, not any lower or higher tier upgrades.