Spike Factory

The Spike factory is a special tower that, once placed, produces road spikes that pops bloons and dissapear at the end of each round. Its special attack, spike storm is capable of killing large amounts of bloons and even Moab or BFB if there is more than one. Like the Dartling Gun, the Spike factory wasn't in the original version of BTD4 and didn't come until an update of the game. It also doesn't have a hotkey just like the dartling gun. The tower was released on September 8th, 2011. It costs 595 on easy, 700 on medium, and 755 on hard.llllllllllllll

BTD4 Description
"'Generates piles of roadspikes around the track automatically. Leftover spikes dissapear at the end of each round."

Starting Ability
Before being upgraded, the spike factory shoots out clumps of six tacks at a rate of one shot nearly every three seconds.These clumps always land in corners and dissapear at the end of each round.

Increased production
This upgrade increases the rate of how fast the Spike Factory shoots out tacks.

Bigger Stacks
This makes the factory produce ten spikes instead of five.

White hot spikes
Makes spike pop frozen and lead bloons.

Spike Storm
Every 15 seconds the factory makes a bunch of road spikes cover the track and the spikes dissapear after a short time. big damage.