Spike Factory (BTD6)

Spike Factory iterations: BTD4 • BTD5 • Battles • BMC • BTD6 • Battles 2

Spike Factory

Automatically generates piles of Road Spikes on the nearby track. Excellent last line of defense.

Unlock method(s)	Choose at levels 22, 23, 24, or 26
Category	Support
Cost	$850 — Easy $1,000 — Medium $1,080 — Hard $1,200 — Impoppable With First Last Line of Defense: $700 — Easy $850 — Medium $930 — Hard $1,050 — Impoppable
Hotkey	J
Introduced	Launch

The Spike Factory is a Support tower in Bloons TD 6. It attacks by passively dispensing piles of spikes onto the nearby track that damage Bloons on contact. Each pile contains 5 spikes (6 with One More Spike), and each spike deals 1 damage. Each spike pile disappears at the end of the round or after 50 seconds, which allows it to build up a thick layer of spikes over time. It can't damage Lead Bloons or frozen Bloons, which destroy its spike piles without being damaged.

It can be upgraded to dispense explosive spiked mines, MOAB-class-Bloon-shredding spikes with drastically increased attack speed, as well as laying spikes over the whole track, or increasing the duration and damage of the spikes.

Mechanics

This article or section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them. The editor that added this notice elaborates: Base Spac with 5-spike piles, and clearing out some stray bloons

The Spike Factory's basic attack places a pile of spikes onto a random point on the track within its range every 1.75 seconds. It can attack even if there are no Bloons within its range, and it can deploy spikes onto parts of the track that are behind line of sight blockers, but it can't deploy spikes if there is no point on the track within its range. Each pile is a projectile that can re-hit Bloons every frame, and the number of spikes in the pile represents the amount of pierce it has. If its pierce is increased, it displays more spikes in the pile accordingly; it can only visually show up to 20 spikes, but it has no pierce cap. By default, each pile contains 5 spikes (6 with One More Spike) that each deal 1 sharp-type damage. Spike piles expire on their own at the end of each round (except in Apopalypse mode, Race Events, CT Time Attack, and Boss Rush), after a Boss Bloon spawns, or 50 seconds after being deployed.

Although the Spike Factory's spikes can hit Camo Bloons, its attack is not considered to have Camo detection. This means that the Spike Factory does not allow Advanced Intel to target Camo Bloons in its range, nor does it allow Gerry's Fire to target or hit Camo Bloons if used on it.

Upgrades

Path 1

Bigger Stacks XP cost: 170
	Creates larger piles of spikes per shot. Easy Medium Hard Impoppable $680 $800 $865 $960

White Hot Spikes XP cost: 600
	Cuts through Lead Bloons and Frozen Bloons. Easy Medium Hard Impoppable $510 $600 $650 $720

Spiked Balls XP cost: 2,400
	Produces spiked balls that do extra damage to Ceramic and Fortified Bloons. Easy Medium Hard Impoppable $1,955 $2,300 $2,485 $2,760

Spiked Mines XP cost: 15,000
	Spiked mines explode violently when they lose all their spikes. Easy Medium Hard Impoppable $8,075 $9,500 $10,260 $11,400

Super Mines XP cost: 32,500
	Creates gigantic exploding spiked mines that can wipe out almost anything. Easy Medium Hard Impoppable $106,250 $125,000 $135,000 $150,000

Path 2

Faster Production XP cost: 180
	Rapidly increases production rate. Easy Medium Hard Impoppable $510 $600 $650 $720

Even Faster Production XP cost: 650
	Increases production rate even more. Easy Medium Hard Impoppable $680 $800 $865 $960

MOAB SHREDR XP cost: 2,500
	Super-Hard-Rending-Engine-Driven-Razors shred MOAB-Class Bloons. Easy Medium Hard Impoppable $2,125 $2,500 $2,700 $3,000

Spike Storm XP cost: 11,000
	Spike Storm ability: Shoots out a thick layer of spikes over the entire track. Easy Medium Hard Impoppable $5,950 $7,000 $7,560 $8,400

Carpet of Spikes XP cost: 35,000
	Regularly sets a carpet of spikes over the whole track. Easy Medium Hard Impoppable $34,850 $41,000 $44,280 $49,200

Path 3

Long Reach XP cost: 120
	Increases range for spike pile drops, plus piles last longer. Easy Medium Hard Impoppable $125 $150 $160 $180

Smart Spikes XP cost: 550
	Spike Factory gains special targeting priority and accelerated production at the start of each round. Easy Medium Hard Impoppable $340 $400 $430 $480

Long Life Spikes XP cost: 2,100
	Spikes last much longer and can carry over one round. Easy Medium Hard Impoppable $1,105 $1,300 $1,405 $1,560

Deadly Spikes XP cost: 9,000
	Extra deadly spikes can pop through 3 layers per spike and last another round. Easy Medium Hard Impoppable $3,060 $3,600 $3,890 $4,320

Perma-Spike XP cost: 29,500
	High damage spikes become almost permanent. Easy Medium Hard Impoppable $25,500 $30,000 $32,400 $36,000

Paragon

Mega Massive Munitions Factory XP cost: 1,000,000
	A factory of explosive spike Bloon annihilation. Easy Medium Hard Impoppable $637,500 $750,000 $810,000 $900,000

Stats

For a complete list of Spike Factory stats, see Stats:Spike Factory (BTD6).

This data was last updated for: version 55.1

Tower
Display range 34 units Footprint radius 8 units Targeting options Normal

Attack
Cooldown 1.75s Offset (X, Y, Z) 0, 0, 12.13 Targeting Depends on targeting option Targeting range 34 units Filters Cannot target Camo
Ignores blockers
Projectile Pierce 5 Damage 1 Damage type Sharp Lifespan 50s Radius 6 units Rehit interval 0.001s Ignores blockers

Related Monkey Knowledge

This list does not include Monkey Knowledge that affects all Support towers.

Monkey Knowledge	Cost	Prerequisites	Introduced
One More Spike Spike Factory stacks get +1 spike.	Free	—	Launch
First Last Line of Defense Purchase price of first Spike Factory each game is $150 less.	Free	One More Spike	Version 22.0
Very Shreddy MOAB SHREDR spikes do +1 extra damage to MOAB-Class Bloons.	250	3 invested First Last Line of Defense	Launch
Hi-Value Mines Spiked Mines cost reduced by 1500.	500	8 invested Very Shreddy	Launch

Rogue Legends

Starter parties with Spike Factories

Item	Insta Monkey 1	Insta Monkey 2	Artifact
Benjamin	0-2-0 Sniper Monkey	1-0-0 Spike Factory	Slipped on the Peel Legendary
Pat Fusty	0-2-0 Tack Shooter	2-0-0 Spike Factory	Heightened Perception Legendary
Smudge Catt	0-2-0 Alchemist	0-1-0 Spike Factory	Cats Meow Legendary
Firecracker Gwen	2-0-0 Wizard Monkey	2-0-0 Spike Factory	Blitzing Ape Barrage Emitter Legendary

Artifacts that add Spike Factories

Artifact	Common	Rare	Legendary
Swelling Spikes	1-0-1 Spike Factory	2-0-1 Spike Factory	2-0-0 Spike Factory

Artifacts that affect Spike Factories

This list does not include Artifacts that affect all Support towers.

Artifact	Common effect	Rare effect	Legendary effect
Explosive Economics	When Support Monkeys are sold, an Area of Effect explosion deals 250 damage to all nearby Bloons. Spike Factory, Engineer, and Beast Handler placement cooldown reduced 1 round(s)	When Support Monkeys are sold, an Area of Effect explosion deals 500 damage to all nearby Bloons. Spike Factory, Engineer, and Beast Handler placement cooldown reduced 1 round(s)	When Support Monkeys are sold, an Area of Effect explosion deals 900 damage to all nearby Bloons. Spike Factory, Engineer, and Beast Handler placement cooldown reduced 2 round(s)
Swelling Spikes	Spike Factories attack half as fast, but have 115% more pierce. Adds a 1-0-1 Spike Factory to your Party	Spike Factories attack half as fast, but have 120% more pierce. Adds a 2-0-1 Spike Factory to your Party	Spike Factories attack half as fast, but have 135% more pierce. Adds a 2-0-0 Spike Factory to your Party

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
0-0-0	$850	$1,000	$1,080	$1,200	$595	$700	$756	$840
1-0-0	$1,530	$1,800	$1,945	$2,160	$1,071	$1,260	$1,362	$1,512
1-1-0	$2,040	$2,400	$2,595	$2,880	$1,428	$1,680	$1,817	$2,016
1-0-1	$1,655	$1,950	$2,105	$2,340	$1,159	$1,365	$1,474	$1,638
0-1-0	$1,360	$1,600	$1,730	$1,920	$952	$1,120	$1,211	$1,344
0-1-1	$1,485	$1,750	$1,890	$2,100	$1,040	$1,225	$1,323	$1,470
0-0-1	$975	$1,150	$1,240	$1,380	$683	$805	$868	$966
2-0-0	$2,040	$2,400	$2,595	$2,880	$1,428	$1,680	$1,817	$2,016
2-1-0	$2,550	$3,000	$3,245	$3,600	$1,785	$2,100	$2,272	$2,520
2-2-0	$3,230	$3,800	$4,110	$4,560	$2,261	$2,660	$2,877	$3,192
2-0-1	$2,165	$2,550	$2,755	$3,060	$1,516	$1,785	$1,929	$2,142
2-0-2	$2,505	$2,950	$3,185	$3,540	$1,754	$2,065	$2,230	$2,478
0-2-0	$2,040	$2,400	$2,595	$2,880	$1,428	$1,680	$1,817	$2,016
1-2-0	$2,720	$3,200	$3,460	$3,840	$1,904	$2,240	$2,422	$2,688
0-2-1	$2,165	$2,550	$2,755	$3,060	$1,516	$1,785	$1,929	$2,142
0-2-2	$2,505	$2,950	$3,185	$3,540	$1,754	$2,065	$2,230	$2,478
0-0-2	$1,315	$1,550	$1,670	$1,860	$921	$1,085	$1,169	$1,302
1-0-2	$1,995	$2,350	$2,535	$2,820	$1,397	$1,645	$1,775	$1,974
0-1-2	$1,825	$2,150	$2,320	$2,580	$1,278	$1,505	$1,624	$1,806
3-0-0	$3,995	$4,700	$5,080	$5,640	$2,797	$3,290	$3,556	$3,948
3-1-0	$4,505	$5,300	$5,730	$6,360	$3,154	$3,710	$4,011	$4,452
3-2-0	$5,185	$6,100	$6,595	$7,320	$3,630	$4,270	$4,617	$5,124
3-0-1	$4,120	$4,850	$5,240	$5,820	$2,884	$3,395	$3,668	$4,074
3-0-2	$4,460	$5,250	$5,670	$6,300	$3,122	$3,675	$3,969	$4,410
0-3-0	$4,165	$4,900	$5,295	$5,880	$2,916	$3,430	$3,707	$4,116
1-3-0	$4,845	$5,700	$6,160	$6,840	$3,392	$3,990	$4,312	$4,788
2-3-0	$5,355	$6,300	$6,810	$7,560	$3,749	$4,410	$4,767	$5,292
0-3-1	$4,290	$5,050	$5,455	$6,060	$3,003	$3,535	$3,819	$4,242
0-3-2	$4,630	$5,450	$5,885	$6,540	$3,241	$3,815	$4,120	$4,578
0-0-3	$2,420	$2,850	$3,075	$3,420	$1,694	$1,995	$2,153	$2,394
1-0-3	$3,100	$3,650	$3,940	$4,380	$2,170	$2,555	$2,758	$3,066
2-0-3	$3,610	$4,250	$4,590	$5,100	$2,527	$2,975	$3,213	$3,570
0-1-3	$2,930	$3,450	$3,725	$4,140	$2,051	$2,415	$2,608	$2,898
0-2-3	$3,610	$4,250	$4,590	$5,100	$2,527	$2,975	$3,213	$3,570
4-0-0	$12,070	$14,200	$15,340	$17,040	$8,449	$9,940	$10,738	$11,928
4-1-0	$12,580	$14,800	$15,990	$17,760	$8,806	$10,360	$11,193	$12,432
4-2-0	$13,260	$15,600	$16,855	$18,720	$9,282	$10,920	$11,799	$13,104
4-0-1	$12,195	$14,350	$15,500	$17,220	$8,537	$10,045	$10,850	$12,054
4-0-2	$12,535	$14,750	$15,930	$17,700	$8,775	$10,325	$11,151	$12,390
0-4-0	$10,115	$11,900	$12,855	$14,280	$7,081	$8,330	$8,999	$9,996
1-4-0	$10,795	$12,700	$13,720	$15,240	$7,557	$8,890	$9,604	$10,668
2-4-0	$11,305	$13,300	$14,370	$15,960	$7,914	$9,310	$10,059	$11,172
0-4-1	$10,240	$12,050	$13,015	$14,460	$7,168	$8,435	$9,111	$10,122
0-4-2	$10,580	$12,450	$13,445	$14,940	$7,406	$8,715	$9,412	$10,458
0-0-4	$5,480	$6,450	$6,965	$7,740	$3,836	$4,515	$4,876	$5,418
1-0-4	$6,160	$7,250	$7,830	$8,700	$4,312	$5,075	$5,481	$6,090
2-0-4	$6,670	$7,850	$8,480	$9,420	$4,669	$5,495	$5,936	$6,594
0-1-4	$5,990	$7,050	$7,615	$8,460	$4,193	$4,935	$5,331	$5,922
0-2-4	$6,670	$7,850	$8,480	$9,420	$4,669	$5,495	$5,936	$6,594
5-0-0	$118,320	$139,200	$150,340	$167,040	$82,824	$97,440	$105,238	$116,928
5-1-0	$118,830	$139,800	$150,990	$167,760	$83,181	$97,860	$105,693	$117,432
5-2-0	$119,510	$140,600	$151,855	$168,720	$83,657	$98,420	$106,299	$118,104
5-0-1	$118,445	$139,350	$150,500	$167,220	$82,912	$97,545	$105,350	$117,054
5-0-2	$118,785	$139,750	$150,930	$167,700	$83,150	$97,825	$105,651	$117,390
0-5-0	$44,965	$52,900	$57,135	$63,480	$31,476	$37,030	$39,995	$44,436
1-5-0	$45,645	$53,700	$58,000	$64,440	$31,952	$37,590	$40,600	$45,108
2-5-0	$46,155	$54,300	$58,650	$65,160	$32,309	$38,010	$41,055	$45,612
0-5-1	$45,090	$53,050	$57,295	$63,660	$31,563	$37,135	$40,107	$44,562
0-5-2	$45,430	$53,450	$57,725	$64,140	$31,801	$37,415	$40,408	$44,898
0-0-5	$30,980	$36,450	$39,365	$43,740	$21,686	$25,515	$27,556	$30,618
1-0-5	$31,660	$37,250	$40,230	$44,700	$22,162	$26,075	$28,161	$31,290
2-0-5	$32,170	$37,850	$40,880	$45,420	$22,519	$26,495	$28,616	$31,794
0-1-5	$31,490	$37,050	$40,015	$44,460	$22,043	$25,935	$28,011	$31,122
0-2-5	$32,170	$37,850	$40,880	$45,420	$22,519	$26,495	$28,616	$31,794

Strategy

For more in-depth strategies, see Strategy:Spike Factory (BTD6).

This section was last updated for: version 55.2

Spike Factory's capability to stockpile makes it a versatile cleanup option, and its higher-tiers are capable of dealing high damage to MOAB-class bloons. Generally, it serves as a last line of defense, to be placed at the end of the track so there's enough time to build up spikes. Base and lower-tier Spike Factory assist cleanup, especially early Camos, allowing it to tank all Camos up to round 37 on single-lane maps.

The first path is pierce-oriented, and its higher tiers are mainly for cleanup against stray Ceramics, as well as groups with Spiked Mines and above. These higher tier upgrades are generally preferred at the back of the lanes, but can sometimes be used for direct DPS. For crosspaths, White Hot Spikes offers innate popping of Leads, especially DDTs, in addition to additional direct strength of stockpiles.

The second path is speed-oriented and its higher tiers specialize in single-target damage to MOAB-class. Its activated abilities are an excellent option against single targets, with Spike Storm being a potent support against the Round 100 BAD, and Carpet of Spikes excelling against most non-dense rounds and fighting off Boss Bloons. When used as a crosspath, it offers consistent production, refreshing spike piles quicker.

The third crosspath focuses on utility, and higher tiers improve lifespan and the efficiency of stockpiles. In addition to long-lasting spikes, Smart Spikes enables focused targeting of spikes, which is important on multi-lane maps or to micromanage spike placements. Starting from Long Life Spikes stalling out rounds is important to maximize spikes for the next round(s).

Tips

• If Smart Spikes cannot be bought, it is adcised to place Spike Factory such that it has barely enough range to reach the track.

Update history

For a complete list of Spike Factory changes, see Update history:Spike Factory (BTD6).

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Version 22.0

•  Base projectile lifespan reduced ― 70s → 50s
  • Note: Long Reach lifespan remains at 100s

Version 23.0

“

Like a few other towers before it, the attack speed crosspath for Spike Factory has outshined the others. We have reworked the lower Spike Factory tiers to distribute this power more evenly while keeping high tier factories at a similar level of power.
— Update notes

”

•  Cost increased ― $800 → $1,000
•  Base spike factory rate increased ― 2.2s → 1.75s

Version 39.0

•  Spike Factory no longer can shotgun spikes for exactly one frame after spawning (bug fix)

Related achievement

$40K	Josh's Constant B-B-Beat any Expert map on CHIMPS with $40,870 or more spent on 1 Spike Factory Reward(s):  0-0-3 Spike Factory

Cosmetic items

Item	Category	Unlock method(s)	Introduced
Spike Factory Pineapples	Monkeys — Projectiles	Trophy Store —  50	Version 23.0

Gallery

For more Spike Factory images, see Gallery:Spike Factory.

Screenshots

This section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them.

Assets

• 
  Portrait
• 
  Insta Monkey icon

In other languages

This section was last updated for: version 48.0

Name

Language	Text	Notes
Arabic	مصنع المسامير	—
Danish	Sømfabrik	—
German	Nagelfabrik	—
Spanish	Fábrica de clavos	—
Spanish (Latin America)	Fábrica de clavos	—
Finnish	Piikkitehdas	—
French	Usine de herses	—
Italian	Fabbrica di aculei	—
Japanese	スパイク工場	—
Korean	스파이크 공장	—
Dutch	Stekelfabriek	—
Norwegian	Spikerfabrikk	—
Polish	Fabryka kolców	—
Portuguese (Brazil)	Usina de Espinhos	—
Russian	Шиповой завод	—
Swedish	Spikfabrik	—
Thai	โรงงานตะปู	—
Turkish	Çivi Fabrikası	—
Chinese (simplified)	刺钉工厂	—
Chinese (traditional)	針刺工廠	—

Description

Language	Text	Notes
Arabic	إنشاء أكوام من مسامير الطريق على المسار القريب. آخر خط دفاع ممتاز.	—
Danish	Genererer automatisk bunker af vejsøm på vejen i nærheden. En fortræffelig sidste forsvarslinje.	—
German	Erzeugt automatisch haufenweise Nagelsperren auf der Strecke nebenan. Eine exzellente letzte Verteidigungslinie.	—
Spanish	Genera montones de abrojos de forma automática en la pista cercana. Excelente para la última línea de defensa.	—
Spanish (Latin America)	Genera montones de abrojos de forma automática en la pista cercana. Excelente para la última línea de defensa.	—
Finnish	Levittää automaattisesti tiepiikkien pinoja lähellä olevalle radalle. Erinomainen viimeinen puolustuslinja.	—
French	Génère automatiquement des tas de herses sur le circuit à proximité. Excellente dernière ligne de défense.	—
Italian	Genera automaticamente mucchi di aculei da strada da collocare sui tracciati vicini. Eccellente come ultima linea di difesa.	—
Japanese	近くのトラックに路上スパイクの山を自動的に作り出す。最後の防衛線として最適。	—
Korean	근처의 트랙에 자동으로 로드 스파이크를 무더기로 생성합니다. 최후의 방어선으로 제격이지요.	—
Dutch	Genereert automatisch stapels kraaienpoten op het nabije pad. Uitstekende laatste verdedigingslinie.	—
Norwegian	Genererer automatisk bunker med veispikere på banen i nærheten. Utmerket som siste forsvarslinje.	—
Polish	Automatycznie generuje stosy kolców drogowych na najbliższej ścieżce. Doskonała ostatnia linia obrony.	—
Portuguese (Brazil)	Automaticamente cria pilhas de espinhos na pista adjacente. Excelente última linha de defesa.	—
Russian	Автоматически генерирует кучи дорожных шипов на ближайшей трассе. Отличное средство для последней линии обороны.	—
Swedish	Skapar automatiskt högar med vägspikar på intilliggande vägar. Utmärkt sista försvarslinje.	—
Thai	สร้างกองตะปูบนถนนเส้นทางที่อยู่ใกล้เคียงโดยอัตโนมัติ เป็นแนวป้องกันสุดท้ายอันยอดเยี่ยม	—
Turkish	Yakındaki parkur üzerinde otomatik olarak bir yığın Yol Çivisi oluşturur. Mükemmel bir son savunma hattı.	—
Chinese (simplified)	在附近的路径上自动生成一堆道钉。堪称强大的最后防线。	—
Chinese (traditional)	在附近的路徑上自動生成一堆路刺。優秀的最后防線。	—