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Spike Factory

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Generates piles of road spikes around the track automatically. Leftover spikes disappear at the end of each round.
~ Bloons Tower Defense 4 Description
Generates piles of road spikes on bits of nearby track. Each pile can pop 5 bloons, and unused spikes disappear at end of each round.
~ Bloons Tower Defense 5 Description
Spike Factory
Spike Factory Icon
The Spike Factory
Information
Appearances Bloons TD 4
Bloons TD 4 Expansion
Bloons TD 5
Bloons TD 5 Deluxe
Bloons TD 5 Mobile
Bloons TD Battles
Bloons TD Battles iOS
Bloons Monkey City
Unlocked at BTD5: Rank 19
BTDB: Battle Score Icon250
BMC: City Level 5, 10 Power, 350 City Cash, and a 1x1 tile.
Range Medium
Popping Power 5 (can be upgraded for more)
Camo Detection Yes
Attack Speed Slow
(Fires a stack of 5 nails at 0.45 times per sec excluding bonuses gained from Monkey Lab and/or Upgrades)
Cost $700 (Easy)
$825 (Medium)
$890 (Hard)
Final Upgrades Unlocked at Rank 45
Special Abilities Spike Storm
BTD Battles Cost $700
Tier 4 Upgrades Spiked Mines
Battle Score Prerequisite Battle Score Icon250
Specialty Building Spikes R Us
Hotkey M

The Spike Factory is a special tower that, once placed, produces Road Spikes on the track that pop bloons and disappear at the end of each round. Its special attack, Spike Storm, is capable of killing large amounts of bloons, destroying even MOABs and BFBs easily. Like the Dartling Gun, the Spike Factory was not included in the original edition of the game. The tower was released on September 8th, 2011. It costs $640 on Easy, $825 on Medium, and $890 on Hard. On March 15, 2012, it was added to Bloons TD 5 as an update. The Spike Factory is capable of popping camo bloons without any upgrades.

Bloons Tower Defense 4Edit

Before being upgraded, the Spike Factory shoots out clumps of five tacks at a rate of one shot nearly every three seconds (per second if fast-forwarded). These clumps always land in corners and disappear at the end of each round. If the spike factory is not placed in range of a corner, then the spike factory will act as if it is not in range of the track at all, and shoot spikes randomly in all directions. This tower will shoot randomly in its range and will not aim for bloons.

Increased ProductionEdit

Description:

Makes the factory produce spikes much faster.

This costs 595 on Easy, 700 on Medium and 755 on Hard, making it cost itself.

Bigger StacksEdit

Description:

The factory creates double size spike stacks.

This costs 510 on easy, 600 on medium and 650 on hard.

White Hot SpikesEdit

Description:

White hot spikes can pop frozen and lead bloons.

This costs 295 on easy, 350 on medium and 380 on hard. The tower turns purple.

Spike StormEdit

Description:

Every 15 seconds the factory generates a storm of short-lived spikes, filling up the entire track. The tower turns red.

This costs 5950 on easy, 7000 on medium and 7560 on hard.

Bloons Tower Defense 5Edit

Before being upgraded, the Spike Factory shoots out clumps of five tacks at a rate of one shot nearly every three seconds (per second if fast-forwarded) or 69 frames. These clumps last until they are used up or the spikes time out (they will do this after a long time or when a round ends). This tower is always able to detect Camo Bloons. However, it will not shoot if there are no bloons on screen.

Spike Factory 2

Spike

Tech18-SpikeFactory

The Spike Factory Tech Tree.

Path 1 UpgradesEdit

Spike Factory Path 1

Path 1 upgrades

Bigger StacksEdit

Cost: $595 (Easy), $700 (Medium), $755 (Hard)
Description: Generates larger piles of Spikes per shot.

Statistics: Popping power of spikes increases to 10.

White Hot SpikesEdit

Cost: $765 (Easy), $900 (Medium), $970 (Hard)
Description: Cuts through lead like a hot spike through... lead.

Statistics: Spikes can pop lead and frozen bloons.

***If you upgrade past here, you will be locked out of any further Path 2 upgrades***

Spiked Ball FactoryEdit

Cost: $2040 (Easy), $2400 (Medium), $2590 (Hard)
Description: Modified to produce heavy but viciously sharp spiked balls instead of regular spikes. Do extra damage to ceramic bloons.

Statistics: Each spike does 7 RBE of damage to Ceramic bloons. Popping power of spikes increase to 16 (20 in the iOS version).

Spiked MinesEdit

Cost: $11900 (Easy), $14000 (Medium), $15120 (Hard)
Description: Rigged with heavy explosives, the spiked balls are set to go off when then they lose all their spikes.

Statistics: Explosions pop 5 layers of many bloons. Attack rate (4/0) improves to once every 31 frames.

Attacks 12 frames every second with 2 right path upgrades.

(The explosions have the same effect of the Mortar Tower's Burny Stuff.)

Path 2 UpgradesEdit

Spike Factory Path 2

Path 2 upgrades

Faster ProductionEdit

Cost: $680 (Easy), $800 (Medium), $865 (Hard)
Description: Increases the rate of Spike production to two spikes every second.

Statistics: Attack rate (0/1) improves to once every 43 frames. Approximately every 1.4 seconds

Even Faster ProductionEdit

Cost: $1065 (Easy), $1250 (Medium), $1350 (Hard)
Description: By adding sprockets, dongles, and widgets, the rate of spike production increases even more to three spikes a second.

Statistics: Attack rate (0/2) improves to once every 26 frames. Approximately every 0.8 seconds.


***If you upgrade past here, you will be locked out of any further Path 1 upgrades***

MOAB-SHREDR SpikesEdit

Cost: $2550 (Easy), $3000 (Medium), $3240 (Hard)
Description: Super-Hard-Rending-Engine-Driven-Razors are specially engineered to really hurt MOAB-class bloons.

Statistics: Each spike does 4x damage to MOAB-class bloons, Attack rate improves to once every 16 frames. Approximately 0.4 seconds.

Spike StormEdit

Cost: $5525 (Easy), $6500 (Medium), $7020 (Hard)
Description: Lays a thick carpet of spikes over the whole track and makes the Factory turn temporarily red because of Red Hot Spikes shooting out of the factory very quickly covering the top of the factory , making it look red.
(Spikes last 5 seconds unless reacted upon, in which the spikes will get an extra 5 seconds to pop a bloon).

Tower XPEdit

Level Upgrade at next level Total XP XP to next level
1 Bigger Stacks 0 500
2 Faster Production 500 500
3 White Hot Spikes 1,000 500
4 Even Faster Production 1,500 2,000
5 Spiked Ball Factory 3,500 6,500
6 MOAB-SHREDR Spikes 10,000 7,000
7 Spiked Mines 17,000 23,000
8 Spike Storm 40,000 63,000

TriviaEdit

Spike Factory

The Spike Factory is out!

  • If the Spike Factory is placed far enough from the track, the Road Spikes it produces will not be seen.
  • It is possible to beat the entire game with only this tower because they can pop Camo Bloons and, with White Hot Spikes, Lead Bloons.
  • This tower has the same colors as the Dartling Gun in BTD4. Both start out green/yellow at levels 1-3, purple at level 4 and red at level 5
  • A Spike Factory in Bloons TD Battles without the bigger stacks upgrade after the release of Bloontonium Mine will shoot stacks of 10 instead of 5 at a slower rate.
  • In BTD4, sometimes the Spike Storm will only cover 1/4-1/2 of the track, while in BTD5, it covers the whole track, the spikes disappear faster than in BTD4.
    • However, there originally was a bug where Spike Storm ability only placed spikes in the Spike Factory's range.
  • The spikes created by the Spike Factory will not be placed on the track if the Spike Factory placed far enough from the track. However, in BTD5 the spikes still have an effect if bloons hit it when being blown back by upgrades such as Distraction.
  • In BTD5, there is a glitch where when you buy the even faster production upgrade, it doesn't load the upgraded look unless it is under the range of a monkey village.
  • There is no hotkey for the Spike Factory in BTD4. In BTD5, its hotkey is M.
  • If the Spiked Mines time out, there will be a bloon-popping explosion. This is especially evident in long rounds.
  • In BTD5, the player only needs 2 of these to beat Monkey Lane on easy (even without selling them or using Road Spikes), and having both of them be 4/1 or 4/2 is optional.
  • In BTD4, there appears to be 6 spikes with no upgrades, but they will pop only 5 bloons.
  • In BTD5, the Bigger Stacks upgrade is unlike regular Road Spikes as it will pop only 10 Bloons instead of 11.
  • A 2-2 Spike Factory used to look the same as an 1/1 one if upgraded to 1/1, then both tier 2 upgrades are bought. This could be solved by placing a village near the Spike Factory. This bug was patched.
  • A 1-2 Spike Factory is the cheapest way to pop an entire MOAB, if it is placed near the end of a long track.
    • A 0/0 Spike Factory is also the cheapest way to pop a Rainbow Bloon, if placed at the end of the Tunnels track.
  • A 1-1 Spike Factory, on a long track, beats the MOAB Mauler in MOAB popping power. However, on short tracks, and with multiple MOAB-Class Bloons, the MOAB Mauler is better in popping MOABs.
  • In BTD4 iOS, there is a glitch that the Spike Factory can produce bigger stacks even without any upgrades.
  • In BTD5 iOS a Spike Factory will occasionally produce a big stack when the Popping Power upgrade is active.
  • The Spike Factory is the only tower other than the Boomerang Thrower that has different price in BMC than in BTD5.
  • In BTD4, Spike Factories may not place spikes in the track if placed too close to the Bloons' path.
  • In Bloons TD Battles, Spiked Mines were a great way to freeze the computer's opponent, when spammed, due to the extreme amount of explosions.
  • The Spike Factory and the Monkey Engineer both use sprockets in their upgrade descriptions.
  • Upgrading a Spike Factory from 4/0 to 4/2 will turn it orange instead of the usual red, and upgrading a Spike Factory from 0/4 to 2/4 will turn it green instead of the usual blue.

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