Spike Factory/Strategies/BTD5

Tower Tips

 * The Tower works by launching a road spike pile to a random section of track located within its attack radius every 2.3 seconds (assuming its not upgraded and fast forward is not on), regardless of any bloons in its attack radius. Since it produces the same amount of spikes in a given timeframe regardless of how much track it has to choose from, it's often best to position this tower so as to concentrate its spikes in a specific key section of track, such as the exit.
 * This tower can be very useful in game modes in which you only have 1 life, such as Impoppable, as it can prevent a game over due to any bloons leaking.

Strategies
Spike Factory is more of an exit protector in BTD5 for most cases. Utilize its 70 second lifespan spikes to its advantage, as stockpiling spikes increases its effectiveness. Placement is important, because since Spike Factory always attacks randomly within its range, and it has no special targeting priorities (unlike in BTD6).