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BTD6 Pedia

Tier 3 upgrade

Spike-o-pult

Spike-o-pult swaps darts for bouncing spiked balls: 2 damage, 18 pierce. How it works, best crosspath (3-2-0), maps where it shines and its lead weakness.

Converts the Dart Monkey into a slower attacking Spike-o-pult that hurls large spiked balls. Each ball can pop lots of Bloons and rebounds off obstacles.

In-game description
  1. Sharp ShotsSharp Shots
  2. Razor Sharp ShotsRazor Sharp Shots
  3. Spike-o-pultSpike-o-pult
  4. JuggernautJuggernaut
  5. Ultra-JuggernautUltra-Juggernaut

Stats

Main attack

Damage
2
Pierce
18
Attack speed
1.15s
Range
36.8
  • Can't pop Lead
  • No camo

How to use Spike-o-pult

Spike-o-pult replaces darts with a catapult that throws large spiked balls. Each ball deals 2 damage with 18 pierce (up from 5 at the most), travels for longer and bounces off walls and obstacles, letting it hit the same bloons again. The trade-offs: it fires every 1.15 seconds instead of 0.95, the balls move at half the speed, and the tower gains only a small range bump to 36.8. The damage type changes so it can pop frozen bloons, but it still cannot pop lead.

When to buy it

Spike-o-pult is an early-game tower for maps packed with obstacles, such as Cornfield, where a single ball can rattle around and burn through all of its pierce. It is also popular in Races because it is cheap and has high pierce for the price.

  • 3-2-0 is the standard crosspath. The attack speed crosspath cuts the cooldown to about 0.77 seconds, which is the biggest DPS gain available.
  • 3-0-2 adds range and camo detection, but rarely does enough to justify losing the speed.

On open maps it struggles to use its pierce, and options like Glaive Ricochet or a Ninja Monkey often do the early-game job better.

Is it worth it?

On obstacle-heavy maps and in Races, yes, it is one of the best value tier 3s at this price. Elsewhere it is mostly a step toward Juggernaut.

Frequently asked questions

Can Spike-o-pult pop lead bloons?

No. Its balls can pop frozen bloons but not lead. You need Juggernaut or outside lead support.

What is the best crosspath for Spike-o-pult?

3-2-0 for damage. Take 3-0-2 only if you need camo detection on this tower.

How much does Spike-o-pult cost?

It costs $320 on Medium. Prices for every difficulty are shown at the top of this page.

All Dart Monkey upgrades

Prices for