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"Ninja" redirects here. For other uses, see Ninja (disambiguation).
Stealthy tower that can see Camo Bloons and throws sharp shurikens rapidly
~ Official tower description
Gotta love all things ninja.
~ Bloons TD 5's Big Bloon Sabotage Description
Stealthy and fast Monkey that throws bladed shurikens to pop the Bloons. Can target Camo Bloons.
~ Bloons TD 6 description

Ninja Monkey is a relatively fast, moderately damaging, Camo detecting monkey tower that can be downright fatal to many bloons if used correctly. This tower made its debut in Bloons TD 5 and makes appearances in Bloons TD 5 Deluxe and other portable versions of Bloons TD 5. It also is in Bloons Monkey City and Bloons TD Battles. In BTD5, its Specialty Building is named the Ninja Academy, and in BMC, it has an upgrade building that is named the Ninja Dojo.

A 0/0 Ninja Monkey may be worth its cost, acting like a 1/1 Dart Monkey except it fires slightly faster and is a little more expensive than it as well as providing cheap Camo detection. On its own, Lead popping power can be quite a nuisance to get up early as the x/3, the only upgrade that allows the Ninja Monkey to pop leads, costs a hefty $2750 on medium. It is good to have a 0/1 Bomb Tower or a Monkey Apprentice which costs less and works very well with Ninjas. As for the last few upgrades on either path, they both help the Ninja stall bloons for other towers to pop them. A 4/2 Ninja has a very large distraction chance (Though still not 100%) and a 2/4 Ninja has its ability to slow down bloons, a flash bomb to stun bloons as well as the usual Distraction upgrade to send bloons back to the start.

Game appearances[]

Ninja Monkey makes up to 6 appearances:


Bloons TD 5[]

Path 1[]

Ninja Discipline
COST: $255 / $300 / $325 / $360
Description: Increases attack range and attack speed.
Effect: Self-explanatory
Sharp Shurikens BTD5.png
Sharp Shurikens
COST: $295 / $350 / $380 / $420
Description: Shurikens can pop 4 bloons each.
Effect: Self-explanatory
Double Shot BTD5.png
Double Shot
COST: $720 / $850 / $920 / $1,020
Description: Extreme Ninja skill enables him to throw 2 shurikens at once.
Effect: Self-explanatory
COST: $2,340 / $2,750 / $2,970 / $3,300
Description: The art of bloonjitsu allows Ninjas to throw 5 deadly shurikens at once!
Effect: Self-explanatory

Path 2[]

Seeking Shuriken BTD5.png
Seeking Shuriken
COST: $210 / $250 / $270 / $300
Description: Infuses bloon hatred into the weapons themselves - they will seek out and pop bloons automatically.
Effect: Self-explanatory
COST: $295 / $350 / $380 / $420
Description: Some bloons struck by the Ninja's weapons will become distracted and move the wrong way temporarily.
Effect: Self-explanatory
Flash Bomb
COST: $2,340 / $2,750 / $2,970 / $3,300
Description: Sometimes throws a flash bomb that stuns bloons in a large radius.
Effect: Self-explanatory
Sabotage Supply Lines
COST: $2,380 / $2,800 / $3,025 / $3,360
Description: Sabotage Supply Lines Ability: Sabotage the bloons supply lines for 15 seconds. During the sabotage, all bloons are crippled to half speed.
Effect: Self-explanatory

Total Costs[]

Bloons TD 6[]

The Ninja Monkey makes a return in BTD6, and it attacks similarly to how it did in BTD5. It pops two bloons per shot at a speed faster than the unupgraded Dart Monkey, as well as always detecting Camo regardless of upgrades. Compared to BTD5, the Ninja Monkey now also can be upgraded to various upgrades that specifically remove Camo status from bloons, upgrades that enhance other Ninjas in its radius, and upgrades specifically damage MOAB-class bloons heavily. It can be upgraded to be Anti-MOAB, to be able to unleash a river of deadly shurikens or be able to heavily reduce the impact of incoming bloons.

The Ninja Monkey is classed as a Magic Monkey.

Path 1[]

Ninja Discipline
COST: $255 / $300 / $325 / $360
Description: Increases attack range and attack speed.
Effect: All attacks gain +66% attack speed (0.60x attack cooldown)
Sharp Shurikens
COST: $295 / $350 / $380 / $420
Description: Shurikens can pop 4 Bloons each.
Effect: Self-explanatory
DoubleShotUpgradeIcon (Ninja).png
Double Shot
COST: $720 / $850 / $920 / $1,020
UNLOCK: 2,000 XP
Description: Throws 2 shurikens at once.
Effect: Throws 2 shurikens per shot spread apart at a small angle from each other.
COST: $2,335 / $2,750 / $2,970 / $3,300
UNLOCK: 16,000 XP
Description: Throws 5 shurikens at once!
Effect: Throws 5 shurikens per shot spread apart at a small angle from each other.
Grandmaster Ninja
COST: $29,750 / $35,000 / $37,800 / $42,000
UNLOCK: 50,000 XP
Description: Throws incredibly fast, 8 shurikens per shot!
Effect: Rapidly throws 8 high-damage shurikens per shot spread apart at a small angle from each other.

Path 2[]

COST: $295 / $350 / $380 / $420
Description: Some Bloons will become distracted and move backwards.
Effect: Shurikens gain a 15% chance to blowback bloons.
COST: $425 / $500 / $540 / $600
Description: Ninja attacks can strip camo from Bloons they damage.
Effect: Self-explanatory
Shinobi Tactics
COST: $765 / $900 / $970 / $1,080
UNLOCK: 2,000 XP
Description: Increases attack speed and pierce of nearby Ninjas. Stacks 20 times.
Effect: Increases attack speed of nearby Ninjas by +8% multiplicatively and pierce of nearby Ninjas by +8% additively. Stacks up to 20 times, and can affect itself.
Bloon Sabotage
COST: $4,420 / $5,200 / $5,615 / $6,240
UNLOCK: 14,000 XP
Description: Sabotage ability: Lasts 15 seconds. During the sabotage, all Bloons move at half speed.
Effect: Ability slows down all bloons on screen and any incoming bloons by 50% for up to 15 seconds. Cannot soak through MOAB-class layers.
Grand Saboteur
COST: $18,700 / $22,000 / $23,760 / $26,400
UNLOCK: 35,000 XP
Description: Ability duration is longer, and MOAB-Class Bloons spawn with less health during the sabotage.
Effect: Ability lasts twice as long and MOAB-class bloons spawn with 25% less health.

Path 3[]

Seeking Shuriken
COST: $210 / $250 / $270 / $300
Description: Shurikens will seek out and pop Bloons automatically.
Effect: Self-explanatory
COST: $340 / $400 / $430 / $480
Description: Throws out spiked caltrops onto the track nearby.
Effect: Regularly throws out caltrops onto nearby track. Pops up to 6 bloons per caltrop.
Flash Bomb
COST: $2,335 / $2,750 / $2,970 / $3,300
UNLOCK: 2,500 XP
Description: Throws a flash bomb that stuns multiple Bloons.
Effect: Every few shuriken throws, it throws a Flash Bomb that stuns bloons and pops any bloon type including Leads and Blacks.
Sticky Bomb
COST: $3,825 / $4,500 / $4,860 / $5,400
UNLOCK: 16,500 XP
Description: Throws powerful timed charges at MOAB-Class Bloons.
Effect: Throws sticky bombs onto MOAB-class bloons every few seconds. Sticky bombs detonate after 4.0s, dealing 500 damage to that blimp upon detonation.
Master Bomber
COST: $34,000 / $40,000 / $43,200 / $48,000
UNLOCK: 37,500 XP
Description: One Monkey MOAB demolition machine.
Effect: Throws stronger sticky bombs that stun affected blimps and deal 1000 damage upon detonation instead of 500. Flash bomb attack briefly stuns blimps too.

Differences Between BTD5 Flash and BTD5 Mobile[]

  • Buff Flash Bomb has more contact area, as the stun grenade instead appears as a Bigger Blasts bomb.
  • Nerf After the Sabotage Supply Lines ability wears off, the affected bloons will recover and once again move at full speed.
  • Nerf Shuriken hitbox is smaller.
  • Nerf Seeking Shuriken homing targetting area decreased, making shurikens less able to detect backwards targets.
  • Nerf Shadow Double Ability (from Ninja Academy Specialty Building) now only creates a 0/0 regardless of upgrades of any Ninja.

Update History (Bloons TD Battles Mobile)[]

The Ninja Monkey is a pretty popular tower. With its versatility, it is able to counter most early-game bloons pretty well, as well as being all-round Camo-detectors. In particular, the Sabotage Supply Lines ability is still popular among the late-game, where sent MOAB-class bloons can be a pain for many towers, where slowing them would be of great help. On the other side, Bloonjitsu is a very popular all-round popper (except Leads of course), and spamming them can often defeat most bloon rushes.

Popular strategies for the Ninja Monkey include the Ninja-Mortar strategy, the Ninja-Bomb strategy, the Ninja-Apprentice (this one is especially so among newer players), and Ninja-Boomerang strategy. The most powerful combination currently is the Ninja-Mortar, which can become almost unstoppable until Round 18 if played correctly, while also being a good counter to the COBRA.

The Ninja in general is overall nerfed in terms of cost, with Sabotage Supply Lines becoming directly more expensive than in other games. (The overall cost to get a 4/x Ninja used to be cheaper compared to BTD5 but after 4.9 it's now the same.)

Initial release
  • Buff Purchasing Double Shot no longer decreases the attack speed for the tower (unlike BTDB Flash).
  • Buff Sabotage Supply Lines slows all bloons on screen as opposed to just the newly spawned ones.
Version 3.1
  • Nerf Sabotage Supply Lines price increased ($2800 → $4000).
  • Nerf Distraction price increased ($350 → $500).
Version 3.9
  • Nerf Sabotage Supply Lines price increased ($4000 → $5000).
Version 4.3
  • Buff Distraction price decreased ($500 → $400).
  • Buff Double Shot price decreased ($850 → $550).
  • Buff Sharp Shurikens price decreased ($350 → $250).
Version 4.6
  • Nerf Double Shot price increased ($550 → $700).

Version 4.9

  • Nerf Bloonjitsu price increased ($2750 → $3000).
  • Nerf Flash Bombs no longer duplicate when the Ninja Monkey is under the influence of a Monkey Fort.

Version History (BTD6)[]

Balance Changes[]

  • Buff Bloon Sabotage and Grand Saboteur abilities can now carry over to through the next round.
  • Buff Sticky Bomb can no longer be removed from MOAB-class bloons when a glue effect expires.
  • Buff Counter Espionage can now remove camo from leads if given Acidic Mixture Dip or other lead-popping grant.
  • Nerf Grand Saboteur no longer applies damage to bloons already on screen.
  • Buff x-x-5 Master Bomber price reduced from $60,000 → $40,000.
  • Buff Sticky Bomb detonation timer decreased (4s → 3s).
  • Buff Master Bomber's Sticky Bomb attack now stuns MOAB-class Bloons for 1 second upon impact.
  • Buff Master Bomber Flash Bomb now stuns MOAB-class bloons for 0.5 seconds.
  • Buff Master Bomber's Flash Bomb damage increased (1 → 5).
  • Buff Grandmaster Ninja pierce has been increased from 4 to 6.
  • Buff x-3-x Shinobi Tactics buff now also applies to pierce as well (Up to a 160% max increase or 20 Shinobi Tactics).
  • Nerf Caltrops attack rate reduced by 50%.
  • Buff Caltrops pierce increased by 100%.
  • Buff 5-x-x Grandmaster Ninja damage increased from 1 to 2.
  • Nerf 5-x-x Grandmaster Ninja attack rate reduced from 0.1 to 0.217.
  • Nerf 5-x-x Grandmaster Ninja pierce reduced from 6 to 4.
While Sticky Bomb still has issues we are investigating, this damage buff allows Sticky Bombs to destroy all regular MOABs from round 81 to 100 in a single bomb in standard games whether they are fortified or not. In addition since this damage runs off a timed function, somewhat similar to Alchemist's Unstable Concoction, we felt that adding a range increase to the Sticky attack similar to Concoction should give a better chance to actually explode before the target MOAB is destroyed by other towers.
~ Ninja Kiwi
  • Buff x-x-4 Sticky Bomb damage increased from 400 to 500.
  • Buff x-x-4 Sticky Bomb 'sticky attack' range increased to Ninja's range * 1.5.
Ninja's Bloon Sabotage is often used in tricky rounds as a powerful slow with a long duration, so we have made a gentle price increase here to reflect that support strength.
~ Ninja Kiwi
  • Nerf Bloon Sabotage price increased from $5,000 → $5,200.

Bug Fixes and General Changes[]

  • Master Bomber correctly applies stun art.
  • Change x-x-2 Caltrops will no longer count to other towers' damage counts when the main ninja is sold.
  • Ninjas should no longer be able to occasionally shoot with an infinite range in specific setups.
  • Nerf Bloon Sabotage no longer (unintentionally) slows BADs.
  • x-x-4 Sticky Bomb should now detonate correctly even when other bloon mutations (like glue) are applied to the same target.
  • x-2-x Counter-Espionage description has been updated with more detail.
  • 0-0-4 Sticky Bomb should work correctly now and not break with DoTs - please tell us if not because we've spent so much time on this, but hopefully we won't hear from anyone on this!


Main article: Ninja Monkey/Strategies


Ninja Monkeys are trained to see all camo bloons and can hold off early rounds single handedly. Powerful upgrades include: Seeking Shuriken, Distraction, Flash Bomb, Bloonjitsu.
~ BMC Flash description




  • The Ninja Monkey with x/3 throws a stun grenade on every fourth throw.
  • With the Hot Magic Monkey Knowledge, a Ninja Monkey can pop frozen bloons without any upgrades.
  • The old artwork for the Ninja Monkey in BTD5 is the artwork that is now Double Shot but wears a black outfit instead.
  • Ninja Monkey is the only tower that has two skins for 2/2 upgrades; white and purple and black and blue. But in sandbox there is a glitch where 2/2 only only shows up as black and blue.
  • When using a 4/x Monkey Village next to a Ninja with Shadow Double Ability reduces the time from 24 seconds to 19 seconds.
  • Both 4/2 and 2/4 Ninjas are in the same stance in the bottom left corner and both have a red belt.
  • There was a glitch when you put a 2/2 Ninja Monkey and put 1/0 Monkey Village on it the ninja will change its color from purple and white to blue and black.
  • There is a glitch where the range slightly increases upgraded from 2/1 to 2/2, but if you upgrade the tower it will decrease slightly.
  • The Ninja Monkey is one of three Bloons TD 5 towers that can detect Camo Bloons without support, the others being the Dartling Gun and Spike Factory.
  • The Ninja Monkey is the only tower non-exclusive Bloons TD 5 tower that can have 2 abilities (Sabotage Supply Lines and Shadow Double Ability from Ninja Academy).
  • If the Ninja Monkey has Seeking Shuriken, it can throw like a Glaive Ricochet, albeit with fewer pops and a different attacking style.
  • Two Bloonjitsus placed on the sockets of power in The Crucible can complete the entire mission.
  • Path 1 upgrades give the Ninja Monkey a lighter color while Path 2 upgrades give it a darker color.
  • It is possible to complete Monkey Lane or Park Path on Easy with only this tower.
  • A single Ninja Monkey by itself can last about 25 rounds without any bloons leaking on most tracks.
    • If very lucky, a 4/2 Ninja Monkey with support for Lead Bloons can survive 45 rounds without any bloons leaking in a short track.
  • This, along with the Monkey Ace, are the only monkeys whose sideburns are not visible.
  • Flash Bomb, along with Glaive Riccochet, are one of the best "Monkey pairs" possible.
  • In BTD5, Flash Bomb is the only upgrade that allows the Ninja Monkey to pop Lead. This is not recommended due to its cost, unless it's the only way to pop Camo Leads.
  • The Ninja Monkey during game play, throws shurikens with only one hand. With Bloonjitsu it throws 5 shurikens with a single hand.
  • The Bloonjitsu ninja has no red headband on BTD5 Mobile and steam.
  • The Ninja Monkey in monkey team event wears a red shirt and a red headband. (No ninja clothing)
  • In Bloons TD 6, this monkey is one out of the two towers in the game to pop Camo Bloons without any upgrades, the other being the Spike Factory.