Caltrops (BTD6): Difference between revisions

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Qwertyxp2000 (talk | contribs)
Strategy: i prefer "lower-tier", and despite popular terminology I don't think "base" is unambiguous. One of the few times that Qwertyxp2000 terminology is better, I reckon. Also shinobi mention, it's gooood in freeplay with pbrew, or just with pbrew in general
Qwertyxp2000 (talk | contribs)
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==Strategy==
==Strategy==
{{Strategy needed}}
{{Strategy needed}}
{{BTD6 last updated|section=y|49.3}}
Caltrops is a separate attack from the shuriken that adds additional DPS to the Ninja for a relatively low cost. It is usually not necessary if only the lower-tier Ninja (Tier 2 and below) is purchased for the early game, and is often skipped if the budget is tight, but can be used if building into a [[Double Shot (BTD6) (Ninja Monkey)|Double Shot]] or [[Bloonjitsu (BTD6)|Bloonjitsu]]. If upgrading to a [[Grandmaster Ninja (BTD6)|Grandmaster Ninja]] there is little reason to not purchase it because the attack still benefits from buffs such as [[Shinobi Tactics (BTD6)|Shinobi]] or [[Berserker Brew (BTD6)|Berserker Brew]]. For [[Shinobi Tactics (BTD6)|Shinobi Tactics]], Caltrops is capable of dealing plenty of damage to single-target when buffed with [[Permanent Brew (BTD6)|Permanent Brew]] and multiple 0-3-2, but without it then it's not so necessary for 0-3-1 Shinobis.
Caltrops is a separate attack from the shuriken that adds additional DPS to the Ninja for a relatively low cost. It is usually not necessary if only the lower-tier Ninja (Tier 2 and below) is purchased for the early game, and is often skipped if the budget is tight, but can be used if building into a [[Double Shot (BTD6) (Ninja Monkey)|Double Shot]] or [[Bloonjitsu (BTD6)|Bloonjitsu]]. If upgrading to a [[Grandmaster Ninja (BTD6)|Grandmaster Ninja]] there is little reason to not purchase it because the attack still benefits from buffs such as [[Shinobi Tactics (BTD6)|Shinobi]] or [[Berserker Brew (BTD6)|Berserker Brew]]. For [[Shinobi Tactics (BTD6)|Shinobi Tactics]], Caltrops is capable of dealing plenty of damage to single-target when buffed with [[Permanent Brew (BTD6)|Permanent Brew]] and multiple 0-3-2, but without it then it's not so necessary for 0-3-1 Shinobis.



Revision as of 12:42, 30 July 2025

For other uses, see Caltrops (disambiguation).
Caltrops
Portrait of Caltrops
Icon of Caltrops Throws out spiked caltrops onto the track nearby.
Tower Path Tier
Ninja Monkey 3 2
XP cost 500
Cash cost $380 — Easy
$450 — Medium
$485 — Hard
$540 — Impoppable

Caltrops is the Ninja Monkey's path 3 tier 2 upgrade in Bloons TD 6. It grants Ninja Monkey an additional attack, which places caltrops randomly onto any track in its range. Caltrops deal 1 damage, have 6 pierce, and cannot damage Lead Bloons. Caltrops have a lifespan of 35 seconds, and disappear when a round ends[fn 1].

Stats

For a complete list of Ninja Monkey stats, see Stats:Ninja Monkey (BTD6).
This data was last updated for: version 55.1
Tower
Display range47 units
Footprint radius6 units
Targeting options
  • First
  • Last
  • Close
  • Strong
  • Camo Prioritization
Attack
Cooldown0.62s
Offset (X, Y, Z)
-2.7, 12.1, 4.56
TargetingDepends on targeting option
Targeting range47 units
Projectile
Pierce2
Damage1
Damage typeSharp
Speed300 units/s
Seeking distance∞ units
Seeking angle144°
Seeking rotation speed∞ °/s
Seeking time3.48s
Lifespan0.62s
Radius3 units
Caltrops
Cooldown3.9s
Offset (X, Y, Z)
-2.7, 12.1, 4.56
TargetingNormal (track)
Targeting range47 units
Projectile
Pierce6
Damage1
Damage typeSharp
Lifespan35s
Radius4 units
Rehit interval0.001s
  • Ignores blockers

1-0-2

Attack
Cooldown0.62s → 0.434s
Caltrops
Cooldown3.9s → 2.73s

2-0-2

Attack
Projectile
Pierce2 → 4

0-1-2

Attack
Projectile
Blowback
Chance15%
Min distance100 units
Max distance150 units
Caltrops
Projectile
Blowback
Chance10%
Min distance100 units
Max distance150 units

0-2-2

Attack
Projectile
Damage to Camo+2
  • Removes Camo
Caltrops
Projectile
Damage to Camo+2
  • Removes Camo

Costs and sell values

Note: this list does not factor in Monkey Knowledge or other discounts.
Tiers Total cost Sell value
Easy Medium Hard Impoppable Easy Medium Hard Impoppable
0-0-2 $975 $1,150 $1,240 $1,380 $683 $805 $868 $966
1-0-2 $1,270 $1,500 $1,620 $1,800 $889 $1,050 $1,134 $1,260
2-0-2 $1,565 $1,850 $2,000 $2,220 $1,096 $1,295 $1,400 $1,554
3-0-2 $2,330 $2,750 $2,970 $3,300 $1,631 $1,925 $2,079 $2,310
4-0-2 $4,665 $5,500 $5,940 $6,600 $3,266 $3,850 $4,158 $4,620
5-0-2 $34,415 $40,500 $43,740 $48,600 $24,091 $28,350 $30,618 $34,020
0-1-2 $1,185 $1,400 $1,510 $1,680 $830 $980 $1,057 $1,176
0-2-2 $1,525 $1,800 $1,940 $2,160 $1,068 $1,260 $1,358 $1,512
0-3-2 $2,545 $3,000 $3,235 $3,600 $1,782 $2,100 $2,265 $2,520
0-4-2 $6,965 $8,200 $8,850 $9,840 $4,876 $5,740 $6,195 $6,888
0-5-2 $25,665 $30,200 $32,610 $36,240 $17,966 $21,140 $22,827 $25,368

Strategy

This strategy section is empty or incomplete.
See the strategy guidelines for more information on how to write strategy sections.
This section was last updated for: version 49.3

Caltrops is a separate attack from the shuriken that adds additional DPS to the Ninja for a relatively low cost. It is usually not necessary if only the lower-tier Ninja (Tier 2 and below) is purchased for the early game, and is often skipped if the budget is tight, but can be used if building into a Double Shot or Bloonjitsu. If upgrading to a Grandmaster Ninja there is little reason to not purchase it because the attack still benefits from buffs such as Shinobi or Berserker Brew. For Shinobi Tactics, Caltrops is capable of dealing plenty of damage to single-target when buffed with Permanent Brew and multiple 0-3-2, but without it then it's not so necessary for 0-3-1 Shinobis.

Update history

For a complete list of Ninja Monkey changes, see Update history:Ninja Monkey (BTD6).
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  • "Shuriken seeking targets too far away has been fixed" (bug fix)
  • Caltrops no longer add to the damage count of other towers when the Ninja Monkey is sold (bug fix)
  • Nerf "[S]hould no longer be able to occasionally shoot with an infinite range in specific setups" (bug fix)
  • Nerf Caltrops: attack speed reduced by 50%
  • Buff Caltrops: pierce increased by 3
    • Note: Due to an oversight, Grandmaster Ninja's caltrop pierce is unchanged
As ninja is the ‘Camo Specialist’ and has been since inception, it is the only tower that will unlock Camo Prioritization on the base tower.
— Update notes
  • Buff Camo Prioritization filter added
0-1-2, 0-2-2, 0-3-2, 0-4-2, 0-5-2
  • Buff Caltrop attack: Gains 15% distraction chance (bug fix)
frequently unused caltrops clutter up the screen and cause extra lag we want to balance out their lifespan to reduce the number always on screen and make them no longer last longer than the base Spike Factory.
— Update notes
Ironing out Caltrop inconsistency & power a little on top and bottom T5s, but also as frequently unused caltrops clutter up the screen and cause extra lag we want to balance out their lifespan to reduce the number always on screen and make them no longer last longer than the base Spike Factory.
— Update notes
  • Nerf Caltrop: Lifespan reduced ― 70s → 35s
5-0-2
  • Buff Caltrop: Pierce increased ― 5 → 6
We’re mindful that this has been in place since launch, but still think this change could lead to more balanced crosspath Ninja play for casual and for apex players. Ninja's 1xx feels like it does too much, granting both range and attack speed to all crosspaths, so these benefits are now being split apart.
— Update notes
  • Buff Range increased ― 40 units → 47 units
    • Neutral Ninja Discipline crosspath is unchanged
For an early game Distraction improvement the consistency of blowbacks is being averaged out more with increased minimum distance but reduced maximum, in many cases there would not actually be 250 units of track length in front of defenses to be blown back across anyway so the overall average distance is slightly lower. More at the mid to endgame we are also weakening distraction distance against Ceramics specifically as by this point Ninja have stacked so much speed and projectiles the consistency doesn’t matter anymore. Finally, distraction values for secondary projectiles are being modified, as Distraction chance as it has existed was never balanced around more than the main attack
— Update notes
0-1-2, 0-2-2, 0-3-2, 0-4-2, 0-5-2
  • Nerf Caltrop: distraction chance reduced ― 15% → 10%
While a great early game option, Ninja generally struggles with dominant crosspathing choices and also has relatively poor base tower value. Without going into every single change, T3s onward remain relatively unchanged with a lot of prices below T3 being moved around from less favorable crosspaths into better/higher tier upgrades.
— Update notes
  • Nerf Upgrade cost increased ― $400 → $450
    • Neutral Overall cost is unchanged (due to cost changes for previous tiers)
  • Buff Caltrop attack: Attack cooldown reduced ― 4.4s → 3.9s (attack speed increased by 12.82%)
  • Buff Main attack: Attack cooldown reduced ― 0.7s → 0.62s (attack speed increased by 12.9%)
    • Note: Attack cooldown with Ninja Discipline is unchanged
1-0-2, 2-0-2, 3-0-2, 4-0-2, 5-0-2
  • Nerf Caltrop attack: Attack cooldown increased ― 2.728s → 2.73s (attack speed reduced by 0.07%)
0-2-2, 0-3-2, 0-4-2, 0-5-2
  • Buff Counter-Espionage now grants Caltrops +2 damage to Camo Bloons (undocumented)
For more Ninja Monkey images, see Gallery:Ninja Monkey.

Screenshots

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Assets

In other languages

Language Name / Description Notes
Arabic كالتروبس
يرمي كالتروبس شائك على المسار القريب.
Danish Partisansøm
Kaster skarpe partisansøm på vejen i nærheden.
German Krähenfüße
Wirft spitze Krähenfüße auf die Strecke nebenan.
Spanish Abrojos
Lanza abrojos afilados a la pista cercana.
Spanish (LA) Abrojos
Lanza abrojos afilados a la pista cercana.
Finnish Ansapiikit
Heittää ansapiikkejä lähellä olevalle reitille.
French Chausse-trappes
Lance des chausse-trappes pointues sur le circuit avoisinant.
Italian Piedi di corvo
Lancia piedi di corvo acuminati sul tracciato vicino.
Japanese 鉄菱
付近のトラックに、スパイク付き鉄菱を投げる。
Korean 마름쇠
주변 트랙에 뾰족한 마름쇠를 뿌립니다.
Dutch Voetangels
Gooit stekels op het pad in de buurt.
Norwegian Fotangel
Kaster to fotangler på banen i nærheten.
Polish Kolczatki
Rzuca kolczatkami na najbliższą ścieżkę.
Portuguese (Brazil) Estrepes
Lança estrepes perfurantes na pista adjacente.
Russian Кальтропы
Бросает на трассу шипастые кальтропы.
Swedish Fotanglar
Kastar ut vassa fotanglar på vägen i närheten.
Thai ตะปูเรือใบ
ขว้างตะปูเรือใบบนเส้นทางที่อยู่ใกล้เคียง
Turkish Demir Dikenleri
Yakındaki parkura demir çivileri fırlatır.
Chinese (simplified) 三角钉
在附近的路径上放置蒺藜。
Chinese (traditional) 鐵蒺藜
向附近的路徑上投擲帶刺鐵蒺藜。
This list was last updated for: version 43.1

Footnotes

  1. Except in game modes which prevent on-track items from disappearing after rounds, such as Apopalypse.