List of attack cooldown multipliers in BTD6

Attack speed buff icon used for Jungle Drums.

Main article: Attack speed#Bloons TD 6

This article was last updated for: version 53.2

The attack speed of a tower in BTD6 which has some buff or nerf is determined by multiplying its base cooldown by a series of multipliers:

$$\text{Cooldown}=\text{Base Cooldown}\times {\text{Multiplier}}_1\times {\text{Multiplier}}_2\times \cdots$$

The actual attack speed or damage increase from a buff can be calculated as follows:$$\text{Increase}=\left(\frac{1}{\text{Multipliers}}-1\right)\times 100\mathrm{\%}$$Or if the bonus percentage indicated in the game is known:$$\text{Increase}=\left(\frac{\text{Bonus}}{1-\text{Bonus}}\right)\times 100\mathrm{\%}$$Some upgrades bypass the attack cooldown multiplier and instead raise the attack speed itself (ex. Heart of Vengeance and other upgrades from the Druid bottom path), for the sake of consistency a multiplier can also be calculated from this increase. In the list, these will be indicated as Not standard multiplier.

$$\text{Multiplier}=\frac{1}{\text{Increase}+1}$$

A list of all attack cooldowns available in BTD6 is available below (multipliers in this table are rounded to 4 decimals and percentages to the nearest integer).:

Cooldown multipliers in BTD6

Source	Cooldown multiplier	Attack speed / damage increase	Applies to	Notes
Turbo Charge ability	0.2	400%	Itself
Glaive Dominus Overcharge ability	0.9Stacks	11% at 1 stack 187% at 10 stacks	Itself	Overcharge buff is 0.9 elevated to the power of the number of stacks, it grants itself 10 stacks upon activation and loses 1 every 4s. For intermediate values, attack speed increase can be calculated with the formulas above.
Glaive Dominus passive buff	0.9	11%	All other Primary towers
Absolute Zero ability	0.6667	50%	All Ice Monkeys
Quickdraw upgrade	1.0 to 0.6667	0% to 50%	Itself	Not standard multiplier. Increases by 1% per unit of distance to the closest Bloon in range, 50% max. For intermediate value, use the formulas above.
Standoff upgrade	1.0 to 0.625 1.0 to 0.4545 on 3-X-X+ Desperados	0% to 60% 0 to 120% on 3-X-X+ Desperados	Itself	Not standard multiplier. Starts at 60% (120%) and decreases by 15% (30%) for each Bloon in range 0% min. Values in parentheses apply for 3-X-X or higher Desperados For intermediate value, use the formulas above.
Wanderer upgrade	1.0 to 0.7143	0% to 45%	Itself	Not standard multiplier. Starts at 45% and decreases by 15% for each Tower in range 0% min. Applies separately for other weapons in middle or bottom path. For intermediate value, use the formulas above.
Nomad upgrade	1.0 to 0.6667	0% to 50%	Itself	Not standard multiplier. Increases by 2% per Bloon in range, 50% max. For intermediate value, use the formulas above.
Elite Sniper passive buff	0.75	33%	All other Sniper Monkeys
Elite Defender Bloon progress passive buff	1.0 to 0.5	0% to 100%	Itself	Not standard multiplier.
Elite Defender lives lost passive buff	0.25	300%	Itself	Triggers when lives are lost.
Nautic Siege Core passive buff	1.3	–23%	Heroes in range	Only while submerged.
Carrier Flagship / Navarch of the Seas passive buff	0.85	18%	All other towers placed in water, except Paragons for the Carrier Flagship version
Artillery Battery ability	0.25	300%	Itself
Sun Temple/  True Sun God /  VTSG passive buff	0.9 or 0.81	11% or 23%	All other towers in range, except Paragons	Depends on the amount of Support sacrifices given to the tower.
Shinobi Tactics passive buff	0.92Stacks 0.92 at 1 stack 0.1887 at 20 stacks	9% at 1 stack 430% at 20 stacks	All Ninja Monkeys in range, except Ascended Shadow	Shinobi tactics buff is 0.92 elevated to the power of the number of stacks. For intermediate values, attack speed increase can be calculated with the formulas above.
Berserker Brew buff	0.9	11%	Towers targeted by the potion
Stronger Stimulant /  Permanent Brew buff	0.85	18%	Towers targeted by the potion
Heart of Vengeance upgrade	0.9091 at no lives lost 0.6667 at 40 lives lost	10% + 1% per life lost 50% maximum (40 lives lost)	Itself	Not standard multiplier.
Druid of Wrath upgrade	0.9524 at 10 damage 0.5 at 200 damage	5% per 10 damage inflicted 100% maximum at 200 damage	Itself	Not standard multiplier. The buff expires at the end of the round, or after not dealing damage for 2s.
Poplust passive buff	0.8696 at 1 stack 0.5714 at 5 stacks	15% per stack 75% at 5 stacks	All other Druids in range	Not standard multiplier.
Smart Spikes start of round buff /  Mega Massive Munitions Factory Controlled Burst ability	0.25	300%	Itself
Jungle Drums passive buff	0.85	18%	All other towers in range, except Paragons
Call to Arms ability	0.6667	50%	All towers, except Paragons	Not standard multiplier. Overrides Homeland Defense if active.
Homeland Defense ability	0.5	100%	All towers, except Paragons	Not standard multiplier. Overrides Call to Arms if active.
Overclock /  Ultraboost /  Master Builder Power Glove ability	0.6	67%	Targeted tower (and towers within 30 units from target for the Paragon)
Ultraboost stacking buff	1 - 0.04 per stack 0.96 at 1 stack 0.6 at 10 stacks	4% at 1 stack 67% at 10 stacks	Targeted tower	Each stack decreases the cooldown by 0.04×.
Master Builder self-overclock	0.7692 after 1 round	30% per round	Itself	Not standard multiplier. Keeps stacking until Master Builder attack speed is capped to 0.15s.
Gwendolin Pyrotechnics passive buff	0.9 at Level 5+ 0.8 at Level 18+	11% at Level 5+ 25% at Level 18+	All Ring of Fire, Signal Flare or Dragon's Breath and their upgrades
Striker Jones passive buff	0.9 at Level 4+ 0.81 at Level 18+	11% at Level 5+ 23% at Level 18+	All Bomb Shooters and Mortar Monkeys
Obyn Greenfoot Nature's Wrath passive buff	0.85	18%	3-X-X Druids and higher upgrades on their tornado attack
Ezili Sacrificial Totem ability	0.85	18%	All towers in range, except Paragons
Ezili Sacrificial Totem ability	0.95	5%	All towers in range, except Paragons	Additional buff to Wizard Monkeys.
Adora Blood Sacrifice ability	0.9 – 0.01 per $100 on the sacrificed tower	11% minimum 100% maximum	Herself, Sun Avatars and their upgrades in range	Multiplier capped to 0.75 ($1,500) in Levels 7 – 19 (33% maximum attack speed increase), and 0.5 ($4,000) at Level 20.
Admiral Brickell Naval Tactics ability	0.5	100%	Herself and all towers placed in water in range, at Level 19+ is all towers in water, except Paragons in both cases
Jar of Pickles from Geraldo	1.3333	-25%	Targeted tower	Not standard multiplier.
Aggression spell from Corvus	0.5	100%	Spirit
Rosalia Adrenaline Rush passive buff	0.99 at 1 stack 0.7143 at 40 stacks	+1% per 2 Bloons in the hero's range 40% if 80 Bloons in range	Herself	Not standard multiplier. Capped at +20% in Level 4-10, +30% at Level 11-16, and +40% at Level 17+.
Phayze Slow Aura	1.1 (1st skull) 1.15 (2nd skull) 1.2 (3rd skull)	-9% (1st skull) -13% (2nd skull) -17% (3rd skull)	All towers
Elite Phayze Slow Aura	1.1 to 2.2	-9% to -55%	All towers	Varies depending on the tier and skull, consult Phayze's page for more information.
Blastapopoulos Magma Pool	1.5	-33%	Towers targeted by the fireball.
One Two Tree / Polyphemus map mechanic	0.85	18%	All towers placed in the corresponding area, except Paragons
Ancient Portal map mechanic	0.7	43%	Heroes placed in the corresponding area
Fast Glue	0.9	11%	Glue Gunners
Fast Tack Attacks	0.92	9%	Tack Shooters
Come On Everybody!	0.95	5%	Primary towers of Tier 2 or lower
Gun Coolant	0.9	11%	Monkey Aces
Flanking Maneuvers	0.9	11%	Monkey Snipers, Subs and Buccaneers
Speedy Brewing	0.95	5%	Alchemists
Veteran Monkey Training	0.97	3%	All towers
Paragon of Power	0.8333	20%	Paragons
Quick Hands	0.96	4%	Heroes
Monkey Boost power	0.5	100%	All towers, except Paragons
Time Stop power	1.6667	–40%	All towers, except Paragons	Not standard multiplier.
Energizing Totem power	0.75	33%	All towers in range, except Paragons

Cooldown multipliers in Rogue Legends

Artifact / Boost	Cooldown multiplier	Attack speed / damage increase	Applies to	Notes
Absolute Ability	1.1	-9%	All Monkeys	Applies to all rarities.
BB Gatling Gun	0.85 (Common) 0.75 (Rare) 0.6 (Legendary)	18% (Common) 33% (Rare) 67% (Legendary)	All Monkeys
Cornered Beasts	1 − 0.05 per stack 0.95 at 1 stack 0.65 at 7 stacks	5% at 1 stack 54% at 7 stacks	Tier 3 or higher Beast Handlers	Common rarity can have up to 6 stacks, Rare can have 5 and Legendary version 7 stacks. A stack is gained for every 3 Bloons in the range of the Beast Handler. For intermediate values, attack speed increase can be calculated with the formulas above.
Critical Success	1.5	-33%	Primary Monkeys	Applies to all rarities.
Discord	Does not apply	0s − +0.1s	Tier 2 or higher Military Towers	Not standard multiplier, it adds a random amount of time to the attack cooldown between 0 and 0.1s.
Dream Teams	0.9	11%	Monkey Subs, Ninja Monkeys, Druids, Wizard Monkeys and Beast Handlers	Applies to all rarities.
Elite Military Quickening	0.92 (Common) 0.9 (Rare) 0.85 (Legendary)	9% (Common) 11% (Rare) 18% (Legendary)	Military Monkeys
Essence Of Bloonarius	1.2	-17%	Tier 4 or higher Towers
First Class Support Quickening	0.92 (Common) 0.9 (Rare) 0.85 (Legendary)	9% (Common) 11% (Rare) 18% (Legendary)	Support Monkeys
Follow Me	1.2 (Common) 1.1 (Rare) 1.05 (Legendary)	-17% (Common) -9% (Rare) -5% (Legendary)	Dart Monkeys, Boomerang Monkeys, Bomb Shooters, Tack Shooters, Super Monkeys, Druids, and Mermonkeys
Grand Magic Quickening	0.92 (Common) 0.9 (Rare) 0.85 (Legendary)	9% (Common) 11% (Rare) 18% (Legendary)	Magic Monkeys
Grand Magic Quickening	0.92 (Common) 0.9 (Rare) 0.85 (Legendary)	9% (Common) 11% (Rare) 18% (Legendary)	Primary Monkeys
Growing Steady	1.2	-17%	Druids	Applies to all rarities.
Home Brew Alchemy	0.85 (Common) 0.8 (Rare) 0.65 (Legendary)	18% (Common) 25% (Rare) 54% (Legendary)	Alchemists
Intelligence Agent	1.5 (Common) 1.4 (Rare) 1.25 (Legendary)	-33% (Common) -29% (Rare) -20% (Legendary)	Monkeys in the range of a Hero
Improved Spelling	1.25	-20%	X-4-X Magic Monkeys and higher upgrades	Applies to all rarities.
Just Like Magic	2	-50%	Tier 5 Magic Monkeys	Applies to all rarities.
Malicious Mauling	2	-50%	Bomb Shooters	Applies to all rarities.
One Shot	2	-50%	Sniper Monkeys	Applies to all rarities.
Overwhelming Synergy	0.85 (Common) 0.79 (Rare) 0.64 (Legendary)	18% (Common) 27% (Rare) 56% (Legendary)	Magic Monkeys
Power Nexus	0.9 (Common) 0.85 (Rare) 0.75 (Legendary)	11% (Common) 17% (Rare) 33% (Legendary)	Powers
Primal Instinct	0.8 (Common) 0.75 (Rare) 0.65 (Legendary)	25% (Common) 33% (Rare) 54% (Legendary)	Primary Monkeys on Close targeting
Primary Specialist	0.8 (Rare) 0.65 (Legendary)	25% (Rare) 54% (Legendary)	Primary Monkeys
Pure Damage	2	-50%	Magic Monkeys	Applies to all rarities.
Slow And Steady	1.5 (Common) 1.35 (Rare) 1.25 (Legendary)	-33% (Common) -26% (Rare) -20% (Legendary)	All Monkeys	Only applies during the first 20s of each round.
Squadron Together Strong	0.85 (Common) 0.79 (Rare) 0.64 (Legendary)	18% (Common) 27% (Rare) 56% (Legendary)	Military Monkeys
Starting Strong	0.89 (Common) 0.85 (Rare) 0.7 (Legendary)	12% (Common) 18% (Rare) 43% (Legendary)	All Monkeys
Support Specialist	0.8 (Rare) 0.65 (Legendary)	25% (Rare) 54% (Legendary)	Primary Monkeys
Swelling Spikes	2	-50%	Spike Factories	Applies to all rarities.
Swiftest To Business	0.8 (Common) 0.7 (Rare) 0.6 (Legendary)	25% (Common) 43% (Rare) 67% (Legendary)	Tier 3 or higher Ninja Monkeys
Tit For Tat	0.85 (Common) 0.80 (Rare) 0.6 (Legendary)	18% (Common) 25% (Rare) 67% (Legendary)	All Monkeys
Too Many Cooks	0.75 × 1.05Stacks (Common) 0.7 × 1.05Stacks (Rare) 0.55 × 1.05Stacks (Legendary)	+33% to -36% (Common) +43% to -31% (Rare) +82% to -13% (Legendary)	Military Monkeys	A stack is gained for each Military Monkey in the map, except itself. This multiplier is 1.05 to the power of the number of stacks. Stacks are capped at 15. Making the total maximum multipliers 1.5592 for Common, 1.4552 for Rare and 1.1434 for Legendary. For intermediate values, attack speed increase can be calculated with the formulas below.
Wacky Wibbly Wavey	0.86 (Common) 0.85 (Rare) 0.7 (Legendary)	16% (Common) 18% (Rare) 43% (Legendary)	Heli Pilots
Zig Then Zag	0.89 (Common) 0.85 (Rare) 0.7 (Legendary)	12% (Common) 18% (Rare) 43% (Legendary)	Military Monkeys
All Tower Quickening	0.96 (Common) 0.95 (Rare) 0.93 (Legendary)	4% (Common) 5% (Rare) 8% (Legendary)	All Monkeys	Boosts are independent from each other.
Magic Quickening	0.93 (Common) 0.9 (Rare) 0.85 (Legendary)	8% (Common) 11% (Rare) 18% (Legendary)	Magic Monkeys	Boosts are independent from each other.
Military Quickening	0.93 (Common) 0.9 (Rare) 0.85 (Legendary)	8% (Common) 11% (Rare) 18% (Legendary)	Military Monkeys	Boosts are independent from each other.
Primary Quickening	0.93 (Common) 0.9 (Rare) 0.85 (Legendary)	8% (Common) 11% (Rare) 18% (Legendary)	Primary Monkeys	Boosts are independent from each other.
Support Quickening	0.93 (Common) 0.9 (Rare) 0.85 (Legendary)	8% (Common) 11% (Rare) 18% (Legendary)	Support Monkeys	Boosts are independent from each other.

Cooldown multipliers in Frontier Legends

Source / Trait	Cooldown multiplier	Attack speed / damage increase	Notes
Laggard	1.2	-17%
Encumbered	1.1	-9%
Quickshot	0.85	18%
Rapid-fire	0.7	43%
Patient	1.0 to 0.7692	0% to 30%	Depends on the Bloon progress in the track, in the same way as Elite Defender. Not Standard multiplier.
Seein'-red	1.0 to 0.625	0% to 60%
Exile	1.15	-13%
Outlaw	1.075	-7%
Renowned	0.925	8%
Legend	0.85	18%
Sheriff Giddy Up ability	0.5	100%	Applies to Sheriff and all towers in range.
Sheriff Gun Belt	0.65	54%	Applies to Sheriff if equipped

Trivia

• If the attack cooldown in BTD6 wasn't capped at 0.001s the fastest attack in BTD6 would belong to Elite Defender, which has a base cooldown of 64.925ms (~15 shots per second), to occur the Bloons must be leaking (0.25× and 0.5× from both passive abilities), have an Elite Sniper in the map (0.75×), be in the range of a True Sun God with max Support sacrifices (0.8× twice), Permanent Brew (0.85×), Jungle Drums (0.85×), Homeland Defense (0.5×), Ultraboost active with 10 stacks (0.6× twice), Ezili Sacrifical Totem (0.85×) in the map One Two Three under a Military or small footprint tile with attack speed bonus (0.85×). In this case it would have an attack cooldown of ~366μs or 2,732 shots per second.
  • Adding Monkey Knowledge, with the targeting set to Last for Flanking Maneuvers MK (0.9×) and Veteran Monkey Training MK (0.97×), it would result in an attack cooldown of ~319μs or approximately ~3,129 shots per second.
  • Also adding powers like the Monkey Boost (0.5×) and Energizing Totem (0.75×), the attack cooldown goes to ~120μs or ~8,345 shots per second.
  • On Rogue Legends, this can be improved, although the Monkey Knowledge buffs are lost, now it can also be affected by Artifacts including ones for other categories thanks to Essence of Dreadbloon, these are Glaive Dominus (0.9×), BB Gatling Gun (0.6×), Elite Military Quickening (0.85×), First Class Support Quickening (0.85×), Grand Magic Quickening (0.85×), Greater Primary Quickening (0.85×), Overwhelming Synergy (0.64×), Primal Instinct (0.7407× on Close targeting), Primary Specialist (0.65×), Squadron Together Strong (0.64×), Starting Strong (0.7×), Support Specialist (0.65×), Tit for Tat (0.6×), Zig, then Zag (0.7×) and Too Many Cooks (0.55 × 1.05⁶ as there are six other towers in the map in this example if Ezili is below Level 15 so she doesn't count as a Military Tower from Essence of Dreadbloon), resulting in a cooldown of approximately ~2.9μs or ~348,916 shots per second. And it can further reduced by using Boosts like Quickening or Monkey Boost.
• On the opposite side, the slowest possible attack possible in BTD6 is the marking attack of Bounty Hunter which has a base attack cooldown of 9s. To occur it should be affected by Jar of Pickles (1.3333×) while fighting Tier 5 Elite Phayze during the last skull (2.2×) to have a cooldown of 26.4s.
  • Powers add Time Stop (1.6667×) which increases the cooldown to 44s.
  • In Rogue Legends it can be further increased with Absolute Ability (1.1×), Critical Success (1.5×), Discord (+0.1s), Essence of Bloonarius (1.2×), Intelligence Agent (1.5×), Improved Spelling (1.25×) , Pure Damage (2×), Slow and Steady (1.5×) and Too Many Cooks (1.5592× with 15 other Military Towers in the map) to have an attack cooldown of 7 minutes with 38.55 seconds. This can be decreased more by using Time Stop as a Boost.