Perma-Spike (BTD6)
For the upgrade in Bloons TD Battles 2, see Perma-Spike (Battles 2).
Perma-Spike
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 High damage spikes become almost permanent.
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| Tower | Spike Factory — Path 3 — Tier 5 | |
|---|---|---|
| XP cost | 29,500 | |
| Cash cost | $25,500 — Easy $30,000 — Medium $32,400 — Hard $36,000 — Impoppable | |
Perma-Spike is the Spike Factory's path 3 tier 5 upgrade in Bloons TD 6. Spike piles are produced about 3.46x slower (without crosspaths, every 1.75s to 6.06s), but deal 10 damage, have 50 pierce (85 with 1-0-5), last up to 300 seconds, and carry over up to 3 rounds. Additionally, the 4x start-of-round speed boost now lasts for 10 seconds. Uniquely, spikes placed by a Perma-Spike are preserved when loading a save, though any buffs the spikes had will be lost.
Stats
For a complete list of Spike Factory stats, see Stats:Spike Factory (BTD6).
This data was last updated for: version 55.1
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| Start-of-round buff | ||||
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1-0-5
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2-0-5
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0-1-5
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0-2-5
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Costs and sell values
Note: this list does not factor in Monkey Knowledge or other discounts.
| Tiers | Total cost | Sell value | ||||||
|---|---|---|---|---|---|---|---|---|
| Easy | Medium | Hard | Impoppable | Easy | Medium | Hard | Impoppable | |
| 0-0-5 | $30,980 | $36,450 | $39,365 | $43,740 | $21,686 | $25,515 | $27,556 | $30,618 |
| 1-0-5 | $31,660 | $37,250 | $40,230 | $44,700 | $22,162 | $26,075 | $28,161 | $31,290 |
| 2-0-5 | $32,170 | $37,850 | $40,880 | $45,420 | $22,519 | $26,495 | $28,616 | $31,794 |
| 0-1-5 | $31,490 | $37,050 | $40,015 | $44,460 | $22,043 | $25,935 | $28,011 | $31,122 |
| 0-2-5 | $32,170 | $37,850 | $40,880 | $45,420 | $22,519 | $26,495 | $28,616 | $31,794 |
Strategy
This section was last updated for: version 52.2
Perma-Spike is a perfectly consistent cleanup tower and win condition for CHIMPS. Since the tower only cares about how much RBE it has to absorb, it is potent against DDTs and Super Ceramics, being able to handle every DDT through round 100. Pair Perma-Spike with Stronger Stimulant, Abyssal Warrior, and Jungle Drums to improve its capacity. Overclock is another, more expensive option. Perma-Spike shines when used with stalling towers; Horned Owl and MOAB Shove are the best, while Cryo Cannon and Maim MOAB require less micromanagement. It excels at maps where it can cover every exit, such as Glacial Trail and Dark Castle. On maps that Perma-Spike cannot reach every exit, such as Muddy Puddles, use Support Chinook.
As a cleanup tower, Perma-Spike should not be solely relied on to tank most blimps from the dense lategame rounds like 96 and 98. However, it highly complements towers with high raw damage that also tend to leak Bloons. Unstable Concoction is cost-efficient extra damage, and its usual downside of creating huge MOAB and Ceramic rushes is not a problem for Perma-Spike. For Heroes, Admiral Brickell, Corvus, and Ezili pair well with it, their abilities cutting away large quantities of RBE from dense rounds. Benjamin can also use Syphon Funding to drastically reduce the densest rounds, with his synergy with Perma-Spike being the primary reason to ever consider him in CHIMPS.
Perma-Spike struggles in Freeplay as it does not scale well with the increasingly denser rounds. Outside of standard gamemodes, its main use case is in Races, where it can be used to instantly pop the remaining Bloon spawns after the bulk of rounds have been cleared.
Both crosspaths are about equal—but compared to 0-2-5, 1-0-5 is slightly cheaper, marginally stronger (1.7x damage output instead of 1.667x), and has the option of upgrading into 2-0-5 in Ice Monkey-centric strategies (for Frozen Bloons; Lead Bloons are not a concern due to Acidic Mixture Dip).
Update history
For a complete list of Spike Factory changes, see Update history:Spike Factory (BTD6).
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Upgrade cost increased ― $22,000 → $25,000- Attack cooldown increased ― 3s → 6s (attack speed reduced by 50%)
- Far targeting no longer causes the game to crash if it cannot reach the track (bug fix)
- 1-0-5, 2-0-5
Pierce increased ― 60 → 70
- Upgrade cost increased ― $25,000 → $30,000
- Projectiles are now saved
- Projectile lifespan reduced ― 350s → 300s
- Projectile max rounds reduced ― 4 → 3
- Now gains a 4× attack speed buff for 2.5 seconds at the start of each round
- Spike piles no longer save (bug)
- Rounds before projectiles expire increased ― 3 → 4 (undocumented)
“
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
— Update notes
”
- Overall cost increased by $200 (due to cost changes for previous tiers)
- 0-1-5
- Rate reduced ― 3.6s → 4.8s (undocumented)
- 0-2-5
- Rate reduced ― 2.7s → 3.36s (undocumented)
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[...] after recent changes to low tiers unintentionally caused it to perform much worse
— Update notes
— Update notes
”
- Attack cooldown reduced ― 6s → 4.85s (attack speed increased by 23.71%)
- Stacks with 0-1-5 Faster Production crosspath ― 4.8s → 3.88s
- Stacks with 0-2-5 Faster Production crosspath ― 3.36s → 2.716s
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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
— Update notes
”
Smart targeting now places spikes as far back on the track as it can, rather than directly in front of the Bloon closest to leaking (undocumented)
- 1-0-5
- Pierce increased ― 70 → 80
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Some minor changes to a few upgrades on Spike Factory evening out some aspects of it.
— Update notes
— Update notes
”
- 1-0-5
- Pierce increased ― 80 → 90
- Spike per spike pile reduced ― 50 → 25
- Damage increased ― 10 → 15
- 1-0-5, 2-0-5
- Spike per spike pile reduced ― 90 → 45
“
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
— Update notes
”
- 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, 2-0-5
- Pierce increased ― 45 → 90
- Spike Factory no longer can shotgun spikes for exactly one frame after spawning (bug fix)
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Permaspike is seeing a small crosspath fix, as the x2x rate change threw this balance out.
— Update notes
— Update notes
”
- 1-0-5, 2-0-5
- Pierce reduced ― 90 → 85
“
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
— Update notes
”
- 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
Gallery
For more Spike Factory images, see Gallery:Spike Factory.
Screenshots
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Assets
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Portrait -
Upgrade icon -
Insta Monkey icon
Trivia
- Perma-Spike has received numerous update notes regarding its lack of nerfs. This is a running gag created by Ninja Kiwi starting with update 46.
In other languages
| Language | Name / Description | Notes | |
|---|---|---|---|
| Arabic | مسامير دائمة تصبح السنون والنتوءات عالية الضرر شبه دائمة. |
— | |
| Danish | Perma-søm Højeffektive søm bliver næsten permanente. |
— | |
| German | Perma-Stacheln Nägel mit hohem Schaden sind fast permanent vorhanden. |
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| Spanish | Permaclavo Los clavos de gran daño se vuelven casi permanentes. |
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| Spanish (LA) | Permaclavo Los clavos de gran daño se vuelven casi permanentes. |
— | |
| Finnish | Pysyvä piikki Tehokkaat piikit tulevat melkein pysyviksi. |
— | |
| French | Perma-pointes Les pointes à dégâts élevés deviennent presque permanentes. |
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| Italian | Perma-aculeo Gli aculei a danni elevati diventano quasi permanenti. |
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| Japanese | パーマスパイク 高ダメージスパイクが、ほぼ永久的に持続するようになる。 |
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| Korean | 영구 스파이크 공격력이 높은 스파이크가 거의 영구적이 됩니다. |
— | |
| Dutch | Permaspies Stekels die grote schade doen worden bijna permanent. |
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| Norwegian | Perma-spiker Spiker med høy skade blir nesten en permanent funksjon. |
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| Polish | Perma-kolce Kolce zadające duże obrażenia stają się niemal permanentne. |
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| Portuguese (Brazil) | Espinho Permanente Espinhos de alto dano se tornam quase permanentes. |
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| Russian | Вечные шипы Наносящие сильный урон шипы становятся почти вечными. |
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| Swedish | Permaspik Spikar som åsamkar stor skada blir nästan permanenta. |
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| Thai | ตะปูถาวร ตะปูดาเมจสูงแทบจะอยู่อย่างถาวร |
— | |
| Turkish | Kalıcı Çivi Yüksek hasarlı çiviler neredeyse kalıcı hale gelir. |
— | |
| Chinese (simplified) | 永久刺钉 高伤害刺钉变得几乎不可磨灭。 |
— | |
| Chinese (traditional) | 永久針刺 高傷害針刺幾乎變得永久存在。 |
— | |
| This list was last updated for: version 43.1 | |||
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