Spiked Mines (Battles)

For other uses, see Spiked Mines (disambiguation).

Spiked Mines

MobileFlash

	Spiked balls explode when they lose all their spikes.

	Rigged with heavy explosives, the spiked balls are set to go off when they lose all their spikes.

Tower		Path	Tier	Cost
Spike Factory		1	4	Flash: $12,000 Mobile: $9,000

← Spiked Ball Factory

Spiked Mines is the Spike Factory's path 1 tier 4 upgrade in Bloons TD Battles. It replaces its spiked balls with mines that explode when they expire (from running out of spikes or lasting for 20 seconds). The explosions deal 5 damage (4 in the Flash version) and inflict damage over time to up to 40 Bloons, dealing 1 additional damage to them every 2 seconds for 6 seconds.

In the mobile version, it dispenses spiked mines every 1 second, reduced to 0.7 seconds if crosspathed with Faster Production and 0.5 seconds with Even Faster Production. In the Flash version, it dispenses every 2 seconds (to compensate for it having double pierce), reduced to 1.248 seconds with Faster Production and 0.75 seconds with Even Faster Production. In the mobile version, unlike Spiked Ball Factory, the mines have 16 pierce instead of 15 pierce and they do not deal extra damage to Ceramic Bloons.

Costs and sell values

Tiers	Mobile version		Flash version
	Cost	Sell value	Cost	Sell value
4-0	$12,900	$10,320	$16,750	$11,725
4-1	$13,400	$10,720	$17,550	$12,285
4-2	$14,150	$11,320	$18,800	$13,160

Update history

For a complete list of Spike Factory changes, see Update history:Spike Factory (Battles).

Mobile version

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Version 3.7

•  Overall cost reduced by $50 (due to cost changes for previous tiers)

Version 4.6

•  Overall cost reduced by $350 (due to cost changes for previous tiers)

Version 6.9

•  Overall cost reduced by $200 (due to cost changes for previous tiers)
• "Fixed an issue with the collision size of the mines"
•  Explosion: damage increased ― 4 → 5
•  Explosion: damage now soaks through layers

Version 6.12

•  Overall cost increased by $200 (due to cost changes for previous tiers)

Version 6.20

•  Overall cost increased by $50 (due to cost changes for previous tiers)

Version 6.22

•  Upgrade cost reduced ― $10,000 → $9,000

Flash version

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