Update history:Spike Factory (BTD6)

This is a list of changes to the Spike Factory in Bloons TD 6 post-release.

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Version 2.0

Tiers	Changes
X-X-2 Directed Spikes and further upgrades	Far targeting no longer causes the game to crash if it cannot reach the track (bug fix)
X-X-5 Perma-Spike	Upgrade cost increased ― $22,000 → $25,000  Attack cooldown increased ― 3s → 6s (attack speed reduced by 50%)

Version 4.0

Tiers	Changes
X-5-X Carpet of Spikes	Passive: Redesigned ― 1 activation at beginning of round, with unlimited timed lifespan for spikes → 1 free Spike Storm ability every 20 seconds

Version 6.0

Tiers	Changes
5-X-X Super Mines	Attack cooldown reduced by 20%

Version 7.0

Tiers	Changes
3-X-X Spiked Balls	Upgrade cost reduced ― $2,400 → $2,200
4-X-X Spiked Mines	Upgrade cost reduced ― $14,000 → $12,000
5-X-X Super Mines	Explosion: damage type changed ― Explosion → Normal  Explosion: pierce increased ― 40 → 60
X-3-X MOAB SHREDR	Upgrade cost reduced ― $3,000 → $2,500
X-4-X Spike Storm	Upgrade cost reduced ― $6,000 → $5,000
X-5-X Carpet of Spikes	Upgrade cost reduced ― $50,000 → $42,000

Version 8.0

Tiers	Changes
3-X-X Spiked Balls and further upgrades	Spike: Damage to Ceramics increased ― +2 → +3
4-X-X Spiked Mines	Explosion: Damage increased ― 4 → 5 Note: Does not apply to Super Mines
X-3-X MOAB SHREDR X-4-X Spike Storm	Damage to MOAB-Class increased ― +3 → +4
X-5-X Carpet of Spikes	Damage to MOAB-Class increased ― +4 → +5
1-0-5 Perma-Spike + Bigger Stacks 2-0-5 Perma-Spike + White Hot Spikes	Pierce increased ― 60 → 70

Version 10.0

Tiers	Changes
5-X-X Super Mines	Spike: damage increased ― 1 → 10

Version 11.0

Tiers	Changes
5-X-X Super Mines	Attack cooldown reduced ― 5.5s → 4.4s
X-4-X Spike Storm	Ability: damage to MOAB-Class increased ― +3 → +4 (bug fix)

Version 12.0

Tiers	Changes
4-X-X Spiked Mines	Explosion: damage increased by 5
5-X-X Super Mines	Explosion: damage increased by 650
X-X-5 Perma-Spike	Upgrade cost increased ― $25,000 → $30,000  Projectiles are now saved  Projectile lifespan reduced by 50s  Projectiles last for 1 less round

Version 14.0

Tiers	Changes
X-X-2 Smart Spikes	Name changed ― "Directed Spikes" → "Smart Spikes"  Description changed ― "Spike Factory gains special targeting priority." → "Spike Factory gains special targeting priority and accelerated production at the start of each round."
X-X-2 Smart Spikes and further upgrades	Now gains a 4× attack speed buff for 2.5 seconds at the start of each round

Version 15.0

Tiers	Changes
X-X-5 Perma-Spike	Spike piles no longer save (bug)

Version 19.0

Tiers	Changes
3-X-X Spiked Balls and further upgrades	Base damage of each spike increased ― 1 → 2

Version 20.0

“

Bigger balance shifts including Super Mines were not feasible for this update, but we did make a meaningful price reduction. — Update notes

”

Tiers	Changes
5-X-X Super Mines	Upgrade cost reduced ― $175,000 → $162,500

Version 21.0

“

Since launch xx2 has never brought enough to the table as a crosspath. Working into the long life trend of the bottom path we felt that introducing longer life at a ‘cross-pathable stage’ may work in some new niche. Along with this we made a couple small tweaks buffing what should be the ‘strength areas’ of a few of the more underperforming high tier Spike upgrades. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines	Spiked Mines blast radius increased ― 15 → 19
0-4-1 Spike Storm + Long Reach 0-5-1 Carpet of Spikes + Long Reach	Spike Storm: Lasts 50% longer with Long Reach
X-5-X Carpet of Spikes	Carpet of Spikes: passive cooldown reduced ― 20s → 15s
X-X-1 Long Reach and all crosspaths X-X-2 Smart Spikes and all crosspaths	Long Reach: lifespan increased ― 70s → 100s Note: X-X-3 unaffected
X-X-4 Deadly Spikes	Deadly Spikes: lasts 1 more round before expiring ― 2 → 3
X-X-5 Perma-Spike	Perma-spikes: Lasts 1 more round before expiring ― 3 → 4 (undocumented)

Version 22.0

“

We quite liked how the lifespan changes for xx1 spikes went previously, though this still wasn’t enough to make the path competitive and increasing this number further wouldn’t have much of an impact since most earlier rounds aren’t long enough. Spiked Balls strats have also felt too strong compared to higher tiers on top path, so touching on all of these issues slightly the base lifespan of spikes has been reduced [...] We have also made changes to give more purpose to 042 Spike Storm and allowed x5x Carpet of Spikes to save its cooldown so it is no longer required to avoid saving to be used in reliable strategies. — Update notes

”

Tiers	Changes
0-0-0 base tower 1-X-0 Bigger Stacks and further upgrades X-1-0 Faster Production and further upgrades	Base projectile lifespan reduced ― 70s → 50s Note: Long Reach lifespan remains at 100s
1-X-X Bigger Stacks	Upgrade cost increased ― $600 → $800
2-X-X White Hot Spikes	Upgrade cost reduced ― $800 → $600
5-X-X Super Mines	Mine: Each spike now triggers a smaller explosion Radius: 20 Pierce: 10 Damage: 10
0-4-2 Spike Storm + Smart Spikes 0-5-2 Carpet of Spikes + Smart Spikes	Spike Storm ability: Targets only active paths (e.g. Bloody Puddles)
X-5-X Carpet of Spikes	Passive ability: Now saves cooldown when saving
0-5-2 Carpet of Spikes + Smart Spikes	Passive ability: Targets only active paths (e.g. Bloody Puddles)

Version 23.0

“

Like a few other towers before it, the attack speed crosspath for Spike Factory has outshined the others. We have reworked the lower Spike Factory tiers to distribute this power more evenly while keeping high tier factories at a similar level of power. — Update notes

”

Tiers	Changes
0-0-0 base tower	Cost increased ― $800 → $1,000
0-0-0 base tower 1-0-X Bigger Stacks 2-0-X White Hot Spikes 3-0-X Spiked Balls 4-0-X Spiked Mines X-0-1 Long Reach X-0-2 Smart Spikes X-0-3 Long Life Spikes X-0-4 Deadly Spikes	Base spike factory rate increased ― 2.2s → 1.75s
5-0-X Super Mines	Rate increased ― 4.4s → 3.5s (undocumented)
5-1-0 Super Mines + Faster Production	Rate reduced ― 2.64s → 2.8s (undocumented)
5-2-0 Super Mines + Even Faster Production	Rate increased ― 1.98s → 1.96s (undocumented)
X-1-X Faster Production	Upgrade cost reduced ― $700 → $600  Faster Production rate buff reduced ― 0.6× → 0.8×
X-1-X Faster Production 1-1-0 Bigger Stacks + Faster Production 2-1-0 White Hot Spikes + Faster Production 3-1-0 Spiked Balls + Faster Production 4-1-0 Spiked Mines + Faster Production 0-1-1 Faster Production + Long Reach 0-1-2 Smart Spikes + Faster Production 0-1-3 Long Life Spikes + Faster Production 0-1-4 Deadly Spikes + Faster Production	Rate reduced ― 1.32s → 1.4s
X-2-X Even Faster Production	Upgrade cost reduced ― $900 → $800  Even Faster Production rate buff increased ― 0.75× → 0.7×
X-2-X Even Faster Production and further upgrades 1-2-0 Even Faster Production + Bigger Stacks 2-2-0 White Hot Spikes + Even Faster Production 3-2-0 Spiked Balls + Even Faster Production 4-2-0 Spiked Mines + Even Faster Production 0-2-1 Even Faster Production + Long Reach 0-2-2 Even Faster Production + Smart Spikes 0-2-3 Long Life Spikes + Even Faster Production 0-2-4 Deadly Spikes + Even Faster Production	Rate increased ― 0.99s → 0.98s
X-5-X Carpet of Spikes	Upgrade cost reduced ― $42,000 → $40,000
0-1-5 Perma-Spike + Faster Production	Rate reduced ― 3.6s → 4.8s (undocumented)
0-2-5 Perma-Spike + Even Faster Production	Rate reduced ― 2.7s → 3.36s (undocumented)

Version 23.2

“

after recent changes to low tiers unintentionally caused it to perform much worse — Update notes

”

Tiers	Changes
X-0-5 Perma-Spike	attack cooldown reduced ― 6s → 4.85s
0-1-5 Perma-Spike + Faster Production	attack cooldown reduced ― 4.8s → 3.88s
0-2-5 Perma-Spike + Even Faster Production	attack cooldown reduced ― 3.36s → 2.716s

Version 24.0

“

Spiked Balls are used quite a lot, but we like their overall position right now so they have had only a slight bump up in price, along with a bigger decrease to the price of T4 Spiked Mines. In addition, Permaspike’s neglected crosspath has had a small pierce increase as currently their only real use is under custom challenge rules. — Update notes

”

Tiers	Changes
3-X-X Spiked Balls	Upgrade cost increased ― $2,200 → $2,300
4-X-X Spiked Mines	Upgrade cost reduced ― $12,000 → $11,000
0-4-2 Spike Storm + Smart Spikes 0-5-2 Carpet of Spikes + Smart Spikes	Spike Storm: now correctly works on splitting tracks (bug fix)
X-X-2 Smart Spikes and further upgrades	"Smart" targeting priority: now places spikes as far back on the track as it can rather than as far forward to the first bloon (undocumented)
1-0-5 Perma-Spike + Bigger Stacks	Permaspike: pierce increased ― 70 → 80

Version 26.0

“

Pierce amounts for Spiked Balls and Mines fits their use cases too awkwardly due to super ceramics. Considering the power of Spiked Balls, their pierce has been reduced slightly to add value to the pierce focussed higher tier in addition to a price cut for Spiked Mines. — Update notes

”

Tiers	Changes
3-X-X Spiked Balls and further upgrades	Pierce reduced ― 17 → 14
4-X-X Spiked Mines	Upgrade cost reduced ― $11,000 → $9,500

Version 27.0

“

Due to a number of performance concerns, the ability for the Spike Storm factory will no longer be able to benefit from a denser storm of spikes via stacking speed buffs on the base tower. — Update notes

”

Tiers	Changes
5-X-X Super Mines	Spike: Damage corrected ― 2 → 10 (bug fix)
X-4-X Spike Storm X-5-X Carpet of Spikes	Ability: No longer is affected by rate buffs Note: Overclock rate buff does affect Spike Storm ability with Call To Arms or Homeland Defense. Other rate buffs may also work but need to be tested.

Version 28.0

“

Some minor changes to a few upgrades on Spike Factory evening out some aspects of it. — Update notes

”

Tiers	Changes
5-X-X Super Mines	Upgrade cost reduced ― $162,000 → $150,000  Small Explosion: Pierce increased ― 20 → 30
1-0-5 Perma-Spike + Bigger Stacks	Pierce increased ― 80 → 90

Version 29.0

“

Super Mines gets damage - to stand it out in Bosses more. — Update notes

”

Tiers

Changes

5-X-X Super Mines

Base spike: Damage increased ― 10 → 50  Base spike: Ceramic bonus increased ― +6 → +20  Base spike: Fortified bonus increased ― +1 → +15  Mini explosion: Damage increased ― 10 → 20  Mini explosion: Now gains ceramic bonus ― +0 → +10  Mini explosion: Now gains fortified bonus ― +0 → +5  Large explosion: Ceramic bonus removed ― +2 → +0  Large explosion: MOAB bonus removed ― +2 → +0  Large explosion: Fortified bonus increased ― +1 → +250

“

While we feel speed interactions for Spike Storm was a necessary evil for performance related concerns, we did not want to kill off self synergy contained local to the tower, so we are trying out an exception to this rule for the 042 crosspath. Additionally, due to the large annoyance in using spike storm in bosses due to the persistent rounds a boss will last for, Spike Storm will now be allowed to carry over one round before being cleaned up. — Update notes

”

Tiers	Changes
X-4-X Spike Storm X-5-X Carpet of Spikes	Spike Storm: Now allows spikes created from the ability to last past the end of 1 round
0-4-2 Spike Storm + Smart Spikes 0-5-2 Carpet of Spikes + Smart Spikes	Spike Storm ability: Now benefits from Smart Spikes start of round speed increase

Version 31.0

“

To help make the tradeoff of building one T5 over multiple T4 not be as hard a choice, the basic attack on Carpet of Spikes has had power increased significantly over rate, range & damage. — Update notes

”

Tiers	Changes
X-5-X Carpet of Spikes	Range increased ― 34 → 50 Note: May reduce concentration of spikes  Spikes: Damage increased ― 3 → 4  Attack cooldown reduced ― 0.98s → 0.33s

Version 31.2

Tiers	Changes
5-X-X Super Mines	Mini-explosion: no longer has single-layer damage (undocumented)

Version 32.0

“

Super Mines DoT damage is entirely insignificant for the price range of this tower. — Update notes

”

Tiers	Changes
5-X-X Super Mines	Super Mines DoT damage per tic damage increased ― 1 → 500
X-X-2 Smart Spikes	Selling Smart Spikes allows other towers to inherit Smart Spike's attack speed buff (bug)

Version 32.2

Tiers	Changes
0-4-2 Spike Storm + Smart Spikes 0-5-2 Carpet of Spikes + Smart Spikes	Smart Spikes start of round buff no longer applies to Spike Storm (undocumented)
X-X-2 Smart Spikes	Resolved xx2 Spike Factory buff applying to other towers & allowing extra buffs to be applied (bug fix)

Version 33.0

“

Spike Factory 4xx feels it needs a small boost in order to really start feeling worth upgrading to rather than getting multiple T3s in the lategame due to the improved Spiked Mines pierce not being as needed for Super Ceramics. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines	Spiked Mines spikes bonus to fortified increased ― +1 → +3  Spiked Mines explosions bonus to fortified increased ― +1 → +3

Version 35.0

“

Spiked Mines explosion radius doesn’t hit too much since it’s almost always centered just in front of the ‘first bloon in a pack’ to hit it in most effective use cases, and Super Mines price is coming down a little to pull it slightly forward into more challenge viability. We also felt like a massive ceramic bonus on Super Mines could both help it annihilate super ceramics, and give it fun niche uses against ceramics in general for challenges and Bosses. Carpet of Spikes still fails to see love over multiple T4's, so rather than making it cheaper we like an all-round increase to the MOAB bonus. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines	Explosion radius increased ― 19 → 30
5-X-X Super Mines	Upgrade cost reduced ― $150,000 → $125,000  Small explosion radius increased ― 20 → 30  DoT damage increased ― 500 → 1000  Spikes ceramic bonus increased ― +20 → +30  Mini explode ceramic bonus ― +10 → +15  Big explode ceramic bonus ― +0 → +500
X-5-X Carpet of Spikes	Base attack MOAB-class bonus ― +4 → +5  Passive ability MOAB-class bonus ― +4 → +5  Ability MOAB-class bonus ― +4 → +5

Version 36.0

“

Spiked Balls provides incredibly powerful cleanup in all stages of gameplay, and we like the use here but for a cheap T3 it doesn't drop off enough lategame with the lower pierce requirements there. Permaspike, while admittedly not often utilized to its max potential, has sat in a dominant high end position for a long time so we are shifting it away from such high pierce into more damage per pierce. — Update notes

”

Tiers	Changes
3-X-X Spiked Balls and further upgrades	Pierce reduced ― 14 → 12
X-X-5 Perma-Spike	Pierce reduced ― 50 → 25  Damage increased ― 10 → 15
1-0-5 Perma-Spike + Bigger Stacks 2-0-5 Perma-Spike + White Hot Spikes	Pierce reduced ― 90 → 45

Version 37.0

“

We’ve heard the feedback, so Spiked Mines get a tweak to get more mines exploding but with less pierce on each, to overall increase quality of life in more frequent use but less wasted pierce. This will help out with some of the problems it has scaling into late game super ceramics. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines	Spiked Mines Explosion: pierce reduced ― 40 → 30 Note: Super Mines explosion pierce remains at 60  DoT: damage increased ― 1 → 10
4-X-X Spiked Mines 5-X-X Super Mines	Spike pierce increased ― 12 → 20
5-X-X Super Mines	DoT: damage increased ― 1000 → 2500

Version 38.0

“

Further balance for 401 crosspath, while this does already see some niche use it made sense to include increased explosion radius with the larger tower range. A flat pierce increase is added on to middle T5’s base attack to reduce crosspath dependency & improve r100 strength. Finally, we enjoyed the hard hitting nerf to Permaspike’s early game, but admittedly this change didn’t really change much of anything for its endgame power while impacting pre r80 rounds far more, so we’re redoing the nerf into a pure attack speed nerf along with an increased benefit to the start of round rate buff to reduce the necessity in playing slowly with it — Update notes

”

Tiers	Changes
4-0-1 Spiked Mines + Long Reach 4-0-2 Spiked Mines + Smart Spikes	Explosion: Radius increased ― 30 → 40
5-0-1 Super Mines + Long Reach 5-0-2 Super Mines + Smart Spikes	Large explosion: Radius increased ― 100 → 133  Mini-explosion: blast radius increased ― 30 → 40
X-5-X Carpet of Spikes	Pierce increased ― 5 → 10 Note: Affects both the main attack and the ability's spike piles
X-X-2 Smart Spikes X-X-3 Long Life Spikes X-X-4 Deadly Spikes	Start of round attack speed buff duration increased ― 2.5s → 3s
X-X-5 Perma-Spike	Pierce increased ― 25 → 50  Damage reduced ― 15 → 10  Attack cooldown reduced ― 4.85s → 6.0625s  Start of round attack speed buff duration increased ― 2.5s → 10s
1-0-5 Perma-Spike + Bigger Stacks 2-0-5 Perma-Spike + White Hot Spikes	Pierce increased ― 45 → 90

Version 39.0

“

The mid spike factory by many players has been ignored outside of few very specific situations for a long time and after fixing some issues, mainly a bug with the shotgunning of projectiles as they spawn, we’re trying a large power increase to more effectively balance the Shredder for its MOAB Damage purpose. — Update notes

”

Tiers	Changes
All tiers	Spike Factory no longer can shotgun spikes for exactly one frame after spawning (bug fix)
X-3-X MOAB SHREDR X-4-X Spike Storm	Main attack: Bonus damage to MOAB-class increased ― +4 → +9
X-4-X Spike Storm	Ability attack: Bonus damage to MOAB-class increased ― +4 → +9
X-5-X Carpet of Spikes	Main attack: Attack cooldown reduced ― 0.33s → 0.49s  Main attack: Bonus damage to MOAB-class increased ― +5 → +9  Ability attack: Bonus to MOAB-class increased ― +5 → +9  Using the Carpet of Spikes active ability just before the passive ability triggers will no longer cause Carpet of Spikes to skip a passive ability activation (bug fix)

Version 40.0

“

Small spike pierce reduction for the Spiked Mines as it’s finally coming into a strong spot on its own. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines 5-X-X Super Mines	Spike pierce reduced ― 20 → 18
X-3-X MOAB SHREDR and further upgrades	Bonus MOAB damage reduced ― +9 → +8
X-5-X Carpet of Spikes	Main attack damage reduced ― 4 → 3

Version 41.0

“

Middle spactory buffs were a fair amount overdone, cutting back more on this. — Update notes

”

Tiers	Changes
X-3-X MOAB SHREDR and further upgrades	Bonus MOAB-class damage reduced ― +8 → +7
X-4-X Spike Storm X-5-X Carpet of Spikes	Spike Storm ability cooldown increased ― 40s → 45s

Version 43.0

“

Spike Storm is now exceptionally strong so the ability cooldown is increasing a small amount along with the T5 cost. This comes along with a crosspath rebalance granting more 042 lifespan. Long Life Spikes can start creating a nice buildup of spikes in advance but most of the time feels fairly meh as a stepping stone into Deadly Spikes, a little price here is being shifted up to improve standalone upgrade value. — Update notes

”

Tiers	Changes
X-4-X Spike Storm	Ability: Minimum duration of spikes reduced ― 10s → 9s Note: Does not affect x-5-x (18s)
X-4-X Spike Storm X-5-X Carpet of Spikes	Ability: Ability cooldown increased ― 45s → 50s
0-4-1 Spike Storm + Long Reach and further upgrades	Ability: Long Reach duration bonus for spikes increased ― 50% → 100% Note: x-4-x spike duration changed from 15s-16.5s to 18s-22s
X-5-X Carpet of Spikes	Upgrade cost increased ― $40,000 → $42,000
X-X-3 Long Life Spikes	Upgrade cost reduced ― $1,400 → $1,300
X-X-4 Deadly Spikes	Upgrade cost increased ― $3,500 → $3,600

Version 44.0

“

Spike Factory is currently overperforming on every path, and as it also happens to have one very dominant crosspath choice we’ve opted to nerf that crosspath as an overall nerf to every path. As Spike Storm stands out even moreso than the other paths it is the only one seeing an additional price increase ontop of this. — Update notes

”

Tiers	Changes
X-2-X Even Faster Production X-3-X MOAB SHREDR X-4-X Spike Storm	Cooldown increased ― 0.98s → 1.05s Note: Does not affect X5X (remains 0.49s attack cooldown)
X-2-X Even Faster Production and all crosspaths	Cooldown modifier reduced ― -30% → -25%
X-4-X Spike Storm	Upgrade cost increased ― $5,000 → $6,000

Version 45.0

“

Still very strong cleanup, Spiked Balls slowly approaches 10 pierce, while leaving Spiked Mines unchanged for more encouragement to upgrade past it. Permaspike is seeing a small crosspath fix, as the x2x rate change threw this balance out. — Update notes

”

Tiers	Changes
3-X-X Spiked Balls	Pierce reduced ― 12 → 11 Note: Pierce of Spiked Mines and above remains the same
1-0-5 Perma-Spike + Bigger Stacks 2-0-5 Perma-Spike + White Hot Spikes	Pierce reduced ― 90 → 85

Version 46.0

“

While this won’t change the effective DPS of spike storm at all, the ability will now occur over a slightly longer duration to reduce the effective ‘instapop’ on many targets and give more time to see what’s going on. — Update notes

”

Tiers	Changes
X-4-X Spike Storm X-5-X Carpet of Spikes	Spike Storm ability: Duration increased ― 1s → 2s  Spike Storm ability: Attack cooldown increased ― 0.02s → 0.04s

Version 48.0

“

Spike Storm’s price is being increased with Carpet of Spikes remaining the same total cost, and Deadly Spikes is seeing a damage increase to better lead up into Permaspike. — Update notes

”

Tiers	Changes
X-4-X Spike Storm	Upgrade cost increased ― $6,000 → $7,000
X-5-X Carpet of Spikes	Upgrade cost reduced ― $42,000 → $41,000
X-X-4 Deadly Spikes	Damage increased ― 2 → 3 Note: Perma-Spike unchanged

Version 48.2

Tiers	Changes
Paragon	Carpet of Spikes: Should now scale correctly with the Paragon Degree (bug fix)

Version 49.0

“

This update we’ve finally decided to nerf Permaspike by completely removing the ‘Far’ target priority from the earlier Smart Spikes upgrade. We know that this loss will be incredibly painful to deal with for the many spike factory enjoyers out there, so we have also included a couple other minor QoL adjustments to the Smart Spikes upgrade in a hopeful attempt to offset this. — Update notes

”

Tiers	Changes
X-X-2 Smart Spikes and further upgrades	Reworked targeting options ― Normal, Close, Far, Smart → Normal, Close, Smart, Set Target, Automatic  Smart Spikes: Adds a "Set Target" option, which allows to select the place inside the Spike Factory's range where the spikes go to.  Smart Spikes: Adds a "Automatic" option, attempts to directly target the first bloon  Removed "Far" targeting option
Paragon	Now has new targeting options from Smart Spikes, instead of locked on Normal (undocumented)  Spikeageddon ability: No longer spawns a lesser amount of mines on short tracks (bug fix) Note: This change causes a bug in Dark Castle

Version 49.1

Tiers	Changes
Paragon	Spikeageddon ability: Fixed a bug where it would keep constantly launching mines after using the ability in Dark Castle (bug fix)

Version 49.3

Tiers	Changes
Paragon	Spikeageddon ability: less Mines are produced on short tracks

Version 50.0

“

Spike Factory’s paragon damage is being moved from mini spike storms back into the main attack to nerf this while reducing the impact of expiring projectiles upon Bosses spawning. — Update notes

”

Tiers	Changes
Paragon	Mini-spike pile: Bonus damage to MOAB-Class Bloons decreased ― +180 → +80  Controlled Burst ability: Initial cooldown is fully reset ― 3.33s → 10s (undocumented)  Spikeageddon ability: Initial cooldown is fully reset ― 25s → 75s (undocumented)

Version 51.0

“

Spike Paragon lost much of its punch against Bosses with the Mini-Storm rework, more than anticipated so we’re granting it adjustments to price, Controlled Burst duration, and the main projectile pierce is being halved while all damage values for this attack are at least doubled, overall improving performance and making sure the Paragon still feels impactful. — Update notes

”

Tiers

Changes

Paragon

Paragon cost reduced ― $800,000 → $750,000  Giant Mine spike: Pierce decreased ― 100 → 50  Giant Mine spike: Damage increased ― 70 → 140  Giant Mine mini-explosion: Damage increased ― 80 → 240  Giant Mine mini-explosion: Bonus damage to Fortified Bloons increased ― +20 → +240  Giant Mine mini-explosion: Bonus damage to Ceramic Bloons increased ― +60 → +240 (undocumented)  Mini-spike: Damage increased ― 20 → 40  Mini-spike: Bonus damage to MOAB-Class Bloons increased ― +80 → +160  Carpet of Spikes: Bonus damage to Boss Bloons increased ― +800 → +1,500  Controlled Burst: Ability duration and cooldown increased ― 10s → 15s

Version 51.1

Tiers	Changes
Paragon	Carpet of Spikes: Should now correctly deal extra damage to Elite Boss Bloons (bug fix)

Version 52.0

“

It seems we really overtuned Spike Paragon with its last changes, and it has dominated most boss events ever since, so it is being reeled back in again. — Update notes

”

Tiers	Changes
4-X-X Spiked Mines and further upgrades	Damage over time: Duration increased ― 6.0s → 6.05s (bug fix) Note: This change solved an issue where the final tick of the damage was not being applied
Paragon	Main attack: Attack cooldown increased ― 10s → 11s (attack speed reduced by 9.09%)  Main Attack: Damage reduced ― 140 → 100  Main Attack: Now deals +480 extra damage to MOAB-Class Bloons (undocumented) (bug fix) Note: This bonus was intended but had no effect due a bug  Mine Mini-explosion: Damage reduced ― 240 → 120  Mini-spike: Bonus damage to MOAB-Class Bloons reduced ― +160 → +100  Carpet of Spikes: Bonus damage to Boss Bloons reduced ― +1,500 → +800  Carpet of Spikes: Bonus damage to MOAB-Class Bloons increased ― +100 → +300

Version 53.0

“

Carpet of Spikes attack rate was slightly faster than intended likely due to a previous balance change not carrying up correctly, the upgrade is performing a little good right now anyway so this formula has been corrected — Update notes

”

Tiers	Changes
X-5-X Carpet of Spikes	Main attack: Cooldown increased ― 0.49s → 0.525s