Monkey Knowledge (BTD6)

For the mechanic in Bloons Monkey City, see Monkey Knowledge (BMC).

Monkey Knowledge (MK) is an enhancement system in Bloons TD 6. Starting at level 30, players can invest Monkey Money and Monkey Knowledge Points into one of six skill trees to unlock permanent enhancements. Most are enhancements to specific towers and upgrades, but some alter the fundamentals of the game itself, such as reducing the health of all MOAB-Class Bloons. Players can choose to disable all their active Monkey Knowledge and enable it again for no cost. Additionally, players can pay 2000 Monkey Money for a respec to re-invest their Monkey Knowledge Points into different trees. It is not required repay Monkey Money to unlock previously unlocked Monkey Knowledge.

Terminology

• "Monkey Knowledge" is both the term for the system as a whole and a term for the nodes that unlock perks. The nodes have also been called "Monkey Knowledge upgrades" and "Knowledge types" to distinguish them from the system.
• "Monkey Knowledge Points" are the currency used to unlock Monkey Knowledge upgrades. This term has also been used for the upgrades themselves on at least one occasion.

Mechanics

Tiers

Monkey Knowledge trees are split into six tiers; upgrades lower on the tree are of higher tiers. Tiers 3 and above require a certain number of Monkey Knowledge Points to be invested into the tree before they can be unlocked, and tiers 4 and above cost Monkey Money when purchased for the first time.

Tier	Primary	Military	Magic	Support	Heroes	Powers
3	×5	×4	×4	×3	×3	×3
4	×8 250	×8 250	×4 250	×3 250	×3 250	×3 250
5	×10 500	×8 500	×8 500	×8 500	×8 500	×3 500
6+	×10 1,000	×14 1,000	×8 1,000	×14 1,000	×8 1,000	×10 1,000

Respec

The Respec option cost  2,000 Monkey Money. It removes all Monkey Knowledge Points the player has invested into all Monkey Knowledge trees and refunds them. Any Monkey Money spent on Monkey Knowledge upgrades will remain, so they will only require a Knowledge Point and not cost any Monkey Money the next time the player unlocks them.

In-app purchases

Monkey Knowledge can be unlocked early by purchasing Knowledge Unlocked from the Shop. This option does not exist in Bloons TD 6+ or Bloons TD 6 NETFLIX due to the removal of the Shop.

Icon	Name / description	Introduced
	Knowledge Unlocked Unlock the secrets of Monkey Knowledge! Instantly rank up to Rank 30 and also get 5 Bonus Knowledge Points!	Launch

‽==List of Monkey Knowledge==

Icon	Text	Category	Cost	Prerequisites
	Extra Dart Pops Dart Monkeys get +1 pierce to all shots.	Primary	Free	—
	Fast Tack Attacks Tack Shooter attack speed increased by 8%.	Primary	Free	—
	Increased Lifespan Longer projectile lifespan for Dart Monkey, Bomb Shooter, Tack Shooter and Glue Gunner.	Primary	Free	—
	Cheap 'Rangs Base cost of Boomerang Thrower[sic] reduced by 50.	Primary	Free	Increased Lifespan
	Crossbow Reach Crossbow range increased.	Primary	Free	Extra Dart Pops
	Fast Glue Glue Gunner 10% increased attack speed.	Primary	Free	Fast Tack Attacks
	Fraggy Frags Frag bombs get 2 extra frags.	Primary	Free	Increased Lifespan
	Hard Tacks Tack Shooter tacks can pop Frozen Bloons.	Primary	Free	Fast Tack Attacks
	Poppy Blades Blade Shooter upgrade gets +2 pierce.	Primary	Free	Hard Tacks
	4 and 4 Dart Monkey's triple shot gets 4 darts every 4th shot.	Primary	Free	5 invested, Crossbow Reach
	Ambidextrous 'Rangs Knowledge and training allows the Boomerang Monkey to Switch Hands as a targeting option and optimize boomerang attacks.	Primary	Free	5 invested, Extra Bounce
	Big Inferno Inferno Ring upgrade gets +3 burst radius.	Primary	Free	5 invested, Poppy Blades
	Budget Clusters Bomb Shooter's Cluster Bombs cost reduced by 100.	Primary	Free	5 invested, Fraggy Frags
	Extra Bounce Increases Boomerang Ricochet pierce by 30.	Primary	Free	5 invested, Cheap 'Rangs
	Force vs Force Juggernaut does +2 damage per shot to MOAB-Class Bloons.	Primary	Free	5 invested, Crossbow Reach
	Icy Chill Freeze radius slightly increased.	Primary	Free	5 invested, Hard Tacks
	More Splatty Glue Glue Splatter can affect 2 extra Bloons per shot.	Primary	Free	5 invested, Fast Glue
	Recurring 'Rangs Boomerangs that return to the Boomerang Monkey will be thrown a second time.	Primary	Free	5 invested, Extra Bounce
	Aviation Grade Glue MOAB Glue slows more than normal.	Primary	250	8 invested, More Splatty Glue
	Hard Press MOAB Press pushes back 30% further.	Primary	250	8 invested, Extra Bounce
	Master Double Cross Allows you to have TWO Crossbow Masters.	Primary	250	8 invested, 4 and 4
	Mega Mauler MOAB Mauler does more damage per hit.	Primary	250	8 invested, Aviation Grade Glue;Hard Press
	So... Cold... Ice Monkey's Permafrost upgrade slows by 60%.	Primary	250	8 invested, Icy Chill
	Bonus Glue Gunner Start each game with 1 free Glue Gunner! (Only 1 free Monkey Tower per game)	Primary	1,000	10 invested, Cheaper Solution
	Bonus Monkey! Start each game with 1 free Dart Monkey! (Only 1 free Monkey Tower per game)	Primary	1,000	10 invested, Come On Everybody!
	More Cash Increase starting cash by 200.	Primary	1,000	10 invested, Bonus Glue Gunner;Bonus Monkey!
	Big Cryo Blast Cryo Cannon gets increased blast radius.	Primary	500	10 invested, So... Cold...
	Bionic Augmentation While Turbo Charge is active, Bionic Boomerang is able to target Camo Bloons.	Primary	500	10 invested, Long Turbo
	Cheaper Solution Bloon Liquefier cost reduced by 1000.	Primary	500	10 invested, Aviation Grade Glue
	Come On Everybody! Primary towers attack 5% faster if all are below tier 3, and cost 5% less if all are tier 3 or 4.	Primary	500	10 invested, Master Double Cross
	Hypothermia Snowstorm freezes Bloons for longer.	Primary	500	10 invested, So... Cold...
	Long Turbo Boomerang Turbo Charge ability lasts 15 seconds.	Primary	500	10 invested, Hard Press
	Violent Impact Bomb Shooter's Bloon Impact stuns for 25% longer.	Primary	500	10 invested, Budget Clusters
	Airforce Upgrades Monkey Aces and Heli Pilots of Tier 3 or higher get +1 pierce per shot.	Military	Free	—
	Elite Military Training All Military Monkeys get a one-off +1000xp and earn xp in-game 5% faster permanently.	Military	Free	—
	Emergency Unlock Activated ability: unlocks locked Dartling Gunners and boosts their swivel speed for a short time.	Military	Free	—
	Naval Upgrades Monkey Buccaneer and Monkey Sub get +1 pierce per shot.	Military	Free	—
	Accelerated Aerodarts Darts from Monkey Aces fly faster.	Military	Free	Airforce Upgrades
	Big Bunch Grape Shot shoots 6 grapes.	Military	Free	Naval Upgrades
	Ceramic Shock Sniper hits on Ceramic Bloons slow them down briefly.	Military	Free	Elite Military Training
	Breaking Ballistic Ballistic Missiles do more damage to Ceramic Bloons.	Military	Free	4 invested, Naval Upgrades
	Cheaper Maiming Maim MOAB cost reduced by 1000.	Military	Free	4 invested, Ceramic Shock
	Extra Burny Stuff Burny Stuff pops every second.	Military	Free
	Faster Takedowns MOAB Takedown Ability has 5 second faster cooldown.	Military	Free	4 invested, Big Bunch
	Gorgon Storm Hydra Rocket Storm stuns damaged Bloons for a short time.	Military	Free	4 invested, Emergency Unlock
	Rapid Razors Razor Rotors pop Bloons faster.	Military	Free	4 invested, Airforce Upgrades
	Targeted Pineapples Pineapples are only dropped near tracks.	Military	Free	4 invested, Accelerated Aerodarts
	Cross the Streams Where Plasma or Doom beams cross on the track they create temporary plasma pools.	Military	250	8 invested, Gorgon Storm
	Gun Coolant Monkey Aces attack 10% faster.	Military	250	8 invested, Targeted Pineapples
	Paint Stripper Mortar shattering shells removes Fortification from DDT Bloons.	Military	250	8 invested, Extra Burny Stuff
	Quad Burst Airburst Darts split into 4 instead of 3.	Military	250	8 invested, Breaking Ballistic
	Trade Agreements Merchantman generates +$20 per round.	Military	250	8 invested, Faster Takedowns
	Aeronautic Subsidy Monkey Ace tier 5 upgrades cost 10% less.	Military	500	8 invested, Gun Coolant
	Budget Battery Artillery Battery cost reduced by 600.	Military	500	8 invested, Paint Stripper
	Charged Chinooks Chinook Activated Abilities give 25% more lives and cash.	Military	500	8 invested, Rapid Razors
	Flanking Maneuvers Sniper, Monkey Sub, & Monkey Buccaneer attack 10% faster when set to 'Last' targeting priority.	Military	500	8 invested, Quad Burst;Trade Agreements
	Master Defender Elite Defender has no cooldown.	Military	500	8 invested, Cheaper Maiming
	Wingmonkey Advanced flight pathing that coordinates multiple Monkey Aces on staggered attack runs.	Military	500	8 invested, Aeronautic Subsidy
	Advanced Logistics All Military Monkeys base costs reduced by 5%.	Military	1,000	14 invested, Aeronautic Subsidy;Door Gunner
	Big Bloon Sabotage All MOAB-Class Bloons spawn in a partially damaged state.	Military	1,000	14 invested, Sub Admiral;Master Defender
	Door Gunner Special Poperations Heli allows tier 4 and below Monkey Towers to attack Bloons while in transit.	Military	1,000	14 invested, Charged Chinooks
	Military Conscription Purchase price of first Military Monkey each game is two thirds the normal.	Military	1,000	14 invested, Trade Agreements
	Sub Admiral Sub Commander affects all Monkey Subs on screen.	Military	1,000	14 invested, Flanking Maneuvers
	Lingering Magic Longer projectile lifespan for Wizard Monkey, Super Monkey, Ninja Monkey, and Druid.	Magic	Free	—
	Magic Tricks Guided Magic and Intense Magic cost 25 less.	Magic	Free	—
	SUPER Range Increased range for the Super Range upgrade.	Magic	Free	—
	Cheaper Doubles Ninja Double Shot cost reduced by 100.	Magic	Free	SUPER Range
	Heavy Knockback Bloons hit by Knockback from Super Monkey are knocked back slightly harder.	Magic	Free	SUPER Range
	Hot Magic All Magic type towers can pop Frozen Bloons.	Magic	Free	Lingering Magic
	Mo' Monkey Money Earn 10% extra Monkey Money from game wins on any difficulty.	Magic	Free	Speedy Brewing
	Speedy Brewing All Alchemist's potions have 5% faster reload time.	Magic	Free	Magic Tricks
	Diversion Tactics Increased chance to distract Bloons from Distraction upgrade.	Magic	Free	4 invested, Cheaper Doubles
	Flame Jet Dragon's Breath flame projectiles move much faster.	Magic	Free	4 invested, Magic Tricks;Hot Magic
	Strike Down the False Sun Avatar can pop Purple Bloons.	Magic	Free	4 invested, Heavy Knockback
	Strong Tonic Transforming Tonic lasts longer.	Magic	Free	4 invested, Speedy Brewing
	Warm Oak Heart of Oak cost reduced by 100.	Magic	Free	4 invested, Hot Magic
	Acid Stability Alchemists' acid pools last 5 seconds longer.	Magic	250	4 invested, Strong Tonic
	Arcane Impale Arcane Spike does extra damage to MOAB-Class and Ceramic Bloons.	Magic	250	4 invested, Flame Jet
	Cold Front Ball Lightning's additional lightning bolts also freeze Bloons.	Magic	250	4 invested, Warm Oak
	X-ray Ultra Ultravision allows Super Monkeys to see through and fire through blocking objects.	Magic	250	4 invested, Strike Down the False
	Mana Shield Creates a special shield that absorbs up to 25 lives for free. Recharges slowly each round if no Bloons leak.	Magic	1,000	8 invested, Arcane Impale
	Tiny Tornadoes Druid tornadoes spawn 3 smaller tornadoes when they expire.	Magic	1,000	8 invested, Deadly Tranquility;Cold Front;Vine Rupture
	Deadly Tranquility Bloonjitsu and Grandmaster Ninja get an extra shuriken per throw.	Magic	500	8 invested, Diversion Tactics
	There Can Be Only One There can be only one.	Magic	500	8 invested, X-ray Ultra
	Vine Rupture Grants Spirit of the Forest Druid a new ability to burst all track vines, doing big damage to all non-Lead Bloons. New vines will regrow after each Rupture.	Magic	500	8 invested, Cold Front
	Flat Pack Buildings Farm and Village cost 2% less and sell for 2% more.	Support	Free	—
	One More Spike Spike Factory stacks get +1 spike.	Support	Free	—
	First Last Line of Defense Purchase price of first Spike Factory each game is $150 less.	Support	Free	One More Spike
	Insider Trades Monkey Business discount increases by 2%.	Support	Free	Flat Pack Buildings
	More Valuable Bananas Valuable Bananas upgrade increases to 30%.	Support	Free	Flat Pack Buildings
	Bigger Banks Monkey Banks can hold 2500 extra money.	Support	Free	3 invested, Insider Trades
	Farm Subsidy First Banana Farm each game costs 100 less.	Support	Free	3 invested, More Valuable Bananas
	Monkey Education All Monkeys XP earn rate increased by 8%.	Support	Free
	Vigilant Sentries Sentry Turrets last longer than normal.	Support	Free	3 invested, One More Spike
	Backroom Deals IMF Loan grants $1000 more and repay rate is 40%.	Support	250	3 invested, Bigger Banks
	Inland Revenue Streams Monkey Town cash bonus increased by 10%.	Support	250	3 invested, Farm Subsidy
	Thicker Foams Cleansing Foam can hit 3 more Bloons before expiring.	Support	250	3 invested, Vigilant Sentries
	To ARMS! Call to Arms duration increased by 3 seconds.	Support	250	3 invested, Monkey Education
	Very Shreddy MOAB SHREDR spikes do +1 extra damage to MOAB-Class Bloons.	Support	250	3 invested, First Last Line of Defense
	Better Sell Deals All Monkeys sell for 5% more.	Support	500	8 invested, Backroom Deals
	Big Traps Bloon Trap can hold 30 more RBE.	Support	500	8 invested, Thicker Foams
	Global Ability Cooldowns All Ability cooldowns for all Monkeys reduced by 3%.	Support	500	8 invested, To ARMS!
	Healthy Bananas Marketplaces now produce 1 life per round and Central Markets produce 3.	Support	500	8 invested, Inland Revenue Streams
	Hi-Value Mines Spiked Mines cost reduced by 1500.	Support	500	8 invested, Very Shreddy
	Veteran Monkey Training All Monkeys reload time reduced by 3%.	Support	500	8 invested, To ARMS!
	Bank Deposits Tier 4 and above Monkey Banks can take deposits from available in game cash.	Support	1,000	14 invested, Better Sell Deals
	Paragon of Power Paragons attack faster if there are no Tier 5 of the same tower.	Support	1,000	14 invested, Veteran Monkey Training
	Ability Discipline Hero level 10 Ability cooldowns reduced by 10%.	Heroes	Free	—
	Heroic Reach All heroes get slightly increased range.	Heroes	Free	—
	More 'Splody Heroes' explosives get +2 pierce per shot.	Heroes	Free	—
	Heroic Velocity All Heroes' projectile speeds increased slightly.	Heroes	Free	Heroic Reach
	Scholarships Hero training costs reduced by 10%.	Heroes	Free	More 'Splody
	Ability Mastery At level 20, Heroes' level 3 Ability cooldown reduced by 30%.	Heroes	Free	3 invested, Ability Discipline
	Quick Hands Makes all heroes attack 4% faster.	Heroes	Free	3 invested, Heroic Velocity
	Self Taught Heroes Heroes earn XP 10% faster.	Heroes	Free	3 invested, Scholarships
	Hero Favors Heroes' base cost reduced by 10%.	Heroes	250	3 invested, Self Taught Heroes;Quick Hands
	Monkeys Together Strong Heroes receive 5% more experience per each Hero placed.	Heroes	1,000	8 invested, Empowered Heroes
	Weak Point All Heroes deal +1 damage to Ceramic & Fortified Bloons.	Heroes	1,000	8 invested, Monkeys Together Strong;Big Bloon Blueprints
	Big Bloon Blueprints Heroes do +1 extra damage to MOAB-Class Bloons with their base attack.	Heroes	500	8 invested, Ability Mastery
	Empowered Heroes Heroes start each game at level 3.	Heroes	500	8 invested, Hero Favors
	Bigger Camo Trap Camo Trap lasts for 600 Bloons.	Powers	Free	—
	Cheaper Lakes Portable Lake costs 40 Monkey Money.	Powers	Free	—
	Just One More Road Spike piles have 21 spikes in them.	Powers	Free	—
	Budget Pontoons Pontoon costs 40 Monkey Money.	Powers	Free	Cheaper Lakes
	Longer Time Stop Time Stop lasts longer than normal.	Powers	Free	Just One More
	Mauling MOAB Mines MOAB mine does extra damage.	Powers	Free	Bigger Camo Trap
	Longer Boosts Monkey Boost lasts longer.	Powers	Free	3 invested, Longer Time Stop
	Powerful Monkey Storm Super Monkey Storm does more damage.	Powers	Free	3 invested, Budget Pontoons;Longer Boosts
	Supersize Glue Trap Glue Trap can slow MOAB-Class Bloons, though the bigger the Bloon, the more glue is used up.	Powers	Free	3 invested, Mauling MOAB Mines
	Ambush Tech Techbot gains a targeting option to trigger only when Bloons enter a specific track area.	Powers	250	3 invested, Supersize Glue Trap
	Fit Farmers Monkey Farmers have larger radius.	Powers	250	3 invested, Powerful Monkey Storm
	Pre-game Prep Start each game with a pile of permanent Road Spikes at the end of the track.	Powers	250	3 invested, Longer Boosts
	Budget Cash Drops Cash Drops cost 20 Monkey Money less.	Powers	500	3 invested, Fit Farmers
	Supa-Thrive Thrive adds 30% instead of 25%.	Powers	500	3 invested, Fit Farmers
	Grand Prix Spree Monkey Money cost to enter Races is reduced by 10%.	Powers	1,000	10 invested, Budget Cash Drops

Related achievements

See also: Monkey Knowledge Point#Achievements

Update history

This section only lists changes to the Monkey Knowledge system in general. For a list of changes to all Monkey Knowledge, see Update history:Monkey Knowledge (BTD6).

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Version 2.0

• Added a button to toggle Monkey Knowledge off

Version 15.0

•  Added Monkey Money costs to tier 4+ Monkey Knowledge
•  Respec confirmation text changed ― "Resets all Monkey Knowledge so you can assign all Monkey Knowledge points again." → "Resets all Monkey Knowledge so you can reassign all points. Monkey Money spent unlocking a given Knowledge remains invested there."

Version 32.0

• Big behind the scenes refactoring to Monkey Knowledge to improve load time & memory
• Bug fixes and resolutions to some minor quirks in functionality
• Current enabled Monkey Knowledge for a save game will now be locked upon creation of that game

Gallery

• 
  Primary category icon
• 
  Military category icon
• 
  Magic category icon
• 
  Support category icon
• 
  Heroes category icon
• 
  Powers category icon
• 
  Enable/disable button icon
• 
  Respec button icon

Unused content

Icon	Name / Description
	Broad Blade Dartlings Shots from Dartling Guns can hit Bloons more easily.
	Dartling Coolant Dartling Gun attack speed increase by 10%.[sic]
	More Buckshot Buckshot shoots 5 projectiles.
	Focused Plasma Plasma Accelerator does damage faster.
	Elite Tutors Generates another +15 XP per round for your Hero.
	Long Graduation Academy Graduate lasts longer.