Spike Factory

The Newest tower in Bloons Tower Defense, the Spike Factory is a defensive tower that throws out piles of five Road Spikes on the track. It can be upgraded to increase attack speed and attack power.

Bigger Stacks: $700
Creates ten road spikes instead of five!

White Hot Spikes: $900
Hot Spikes can cut through lead like a hot spike through... lead.

Spiked Ball Factory: $2400
Modified to produce heavy, yet viciously sharp, spiky balls! They do extra damage to Brown Bloons!

Spiked Mines: $14000
Rigged with heavy explosives, the spiked balls are set to go off when they lose all their spikes!

Faster Production: $800
Increases the rate of spike production!

Even Faster Production: $1250
By adding sprockets, dongles, and widgets, the rate of spike production increases even more!

MOAB-SHREDR spikes: $3000
Super-Hard Rending Engine-Driven Razors are specially engineered to hurt M.O.A.B.-Class Bloons!

Spike Storm: $6500
Spike Storm Attack: Covers the whole map with a thick carpet of spikes!