Bloons Tower Defense X Wiki
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Bloons Tower Defense X Wiki

Overview

The Spike Factory creates piles of spikes within its range. At first each pile contains 3 spikes but it can be upgraded to have more spikes per pile. Costs $750.

Upgrades

Spike Factory
Bigger Pile
Spike pile now pops 12 bloons
$700
Tier 1
Total cost: $1,450
Unlock the challenge for this tower by unlocking 5M (Nebula).

Complete the challenge to unlock 3S (Shield Generator).

Faster Piling
Produces spikes nearly twice as fast
$1,250
Tier 2
Total cost: $2,700
Spike Ball Factory
Does more damage to armored bloons
$2,400
Tier 3L
Total cost: $5,100
Titanium Spikes
Titanium spikes pop twice as much and last longer
$3,000
Tier 3M
Total cost: $5,700
Moab Shredr
Does more damage to MOAB class bloons
$3,400
Tier 3R
Total cost: $6,100
Shield Generator
Shields that block and pop bloons
$3,500
Tier 3S
Total cost: $6,200
Rank 36
BP.png x5

Spiked Mines
Mines explode when they run out of spikes
$8,500
Tier 4L
Total cost: $13,600
Rank 36
BP.png x5

Planetery Spikes
Big spike pile pops 75 bloons
$7,800
Tier 4M
Total cost: $13,500
Rank 36
BP.png x5

Trvlr Spikes
Generates more spikes that home in on MOABs
$7,900
Tier 4R
Total cost: $14,000
Rank 36
BP.png x15

Ultra Forcefields
Much stronger forcefields
$11,500
Tier 4S
Total cost: $17,700
Rank 60
BP.png x9

Spike Wall
Spike wall blocks thousands of bloons
$10,000
Tier 5L
Total cost: $23,600
Rank 60
BP.png x13

Nebula
Creates mini-stars that pop 300 bloons
$25,000
Tier 5M
Total cost: $38,500
Rank 60
BP.png x11

Spike Storm
Covers the track in spikes
$13,000
Tier 5R
Total cost: $27,000
Rank 60
BP.png x25

Lockdown
Place the entire track on lockdown
$42,000
Tier 5S
Total cost: $59,700

Total BP.png to fully unlock: 88

Tips

  • Can pop camo by default.
  • Can pop lead with all upgrades tier 3 and beyond.
  • Can damage HTAs with all upgrades tier 1 and beyond.
  • The homing spikes from 4R have infinite range.
  • 5M factory deals damage to shielded or static bloons instead of popping them on contact.
  • Nebulas regrow over time, as long as they haven't reached their lifespans.
  • Stack path upgrades cannot bounce back DDTs, ZOMGs and Trojan Bloons, but can slow down DDTs.

Advantages/Disadvantages

Advantages

  • Can deal with bloons that sneak by your defenses.
  • Has powerful abilities.
  • Left path is good at taking out MOAB class bloons.
  • Stack path gives towers more time to target bloons.
  • A single nebula factory can solo a ZOMG.

Disadvantages

  • Bad against shielded bloons and static bloons.
  • VERY expensive at higher tiers.
  • Ineffective if placed near the path entrance.
Towers
Dart Monkey.png Tack Shooter.png
Boomarang Thrower.png Sniper Monkey.png
Ninja Monkey.png Bomb Shooter.png
Monkey Submarine.png Charge Tower.png
Glue Gunner.png Ice Monkey.png
Monkey Buccaneer.png Monkey Engineer.png
Monkey Ace.png Bloonchipper.png
Monkey Alchemist.png Monkey Apprentice.png
Monkey Village.png Banana Tree.png
Mortar Launcher.png Dartling Gun.png
Spike Factory.png Heli Pilot.png
Plasma Monkey.png Super Monkey.png
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