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"WOF" redirects here. For the defunct Ninja Kiwi website feature abbreviated as WOF, see Wheel of Fate.

Creates a super hot wall of fire across the track to roast the Bloons as they pass.
~ In-game description

Wall of Fire is the Tier 2 upgrade of Path 2 for the Wizard Monkey in Bloons TD 6. It adds a new fiery attack that regularly generates a blaze ("wall of fire") that constantly damage passing bloons. The Wizard deploys them on the closest area of track by default, or any manually targeted location within range if given Guided Magic.

Each Wall of Fire blaze lasts up to 4.5s (6.5s with Guided Magic), and the Wizard creates a new Wall of Fire every 6.5s. Each deployed Wall of Fire blaze pierces up to 10 bloons at a time (15 with Intense Magic) in a contact radius of 15 units. Wall of Fire blazes constantly damage bloons every 0.15s and refresh pierce every 0.15s, the combination of the two attributes simulating a constantly burning flame. Walls of Fire cannot pop Purple Bloons without support, and any Purple Bloon that touches it will destroy it. Unlike most attacks, the Wall of Fire attack undergoes a 1.0s initial cooldown before creating its first Wall of Fire.

Also, Wall of Fire is affected by the damage scaling of Necromancer: Unpopped Army.

This upgrade costs $680 on Easy, $800 on Medium, $865 on Hard, and $960 on Impoppable.



Roasted WoF

Wall of Fire roasting the bloons that pass by. A blaze idly ignites and another blaze roasts the bloons.

The Wizard Monkey now wears red gloves and its hat is now a wide-rimmed red wizard cap. The celestial patterns on its hat are kept yellow. On the upgrade portrait, the Wizard holds up a flame with his right hand.

When deploying a Wall of Fire, the Wizard briefly raises upwards before using its right hand to deploy the blaze. With exception of Prince of Darkness, which simply presses the arms of its chair, most Tier 3 and above Wizards will deploy the blaze with their wands.

Wall of Fire adds a new attack that creates blazes on nearby track every 6.5s, constantly damaging bloons that pass through. Once deployed, the Wall of Fire blaze will receive its power based on the Wizard at the time of deployment. Aside from further upgrades, crosspaths can change how that attack will behave. For Path 1 crosspathing, Guided Magic enables a target marker to let the player choose where the Wall of Fire is deployed, lasts 5.5 seconds, and can be placed over obstacles. Intense Magic adds +5 pierce, while new Walls of Fire from a Wizard with Monkey Sense can target and pop Camo Bloons.

Targeting Priorities[]

Wall of Fire targets bloons using the standard targeting priorities. It shoots straight movement projectiles.

  • First: Targets the first bloon visible within its range.
  • Last: Targets the last bloon visible within its range.
  • Close: Targets the closest bloon visible within its range.
  • Strong: Targets the strongest bloon visible within its range.

Wall of Fire's blaze attack will place itself on the area of the track closest to the Wizard. For Path 1 crosspathing, placement is adjusted.

Full Popology[]


Updated as of Version 43.0
Base stats
  • Bolt:
    • Projectile, energy type, 40 range, 1.1s attack cooldown, 1 damage, 3 pierce.
  • Fireball:
    • Projectile, fire type, 40 range, 2.2s attack cooldown, 1 damage, 1 pierce, impact, create an explosion.
    • Explosion, Area of Effect, explosion type, 1 damage, 15 pierce, 10 blast radius.
  • Firewall:
    • On-track item, fire type, 40 range, 1.0s initial cooldown, 6.5s attack cooldown, 1 damage per 0.15s, 10 pierce, 15 projectile size, 4.5s lifespan. Locked on Close targeting.
Crosspathing interactions
  • 1-2-0:
    • Bolt ignores Line of Sight
    • Fireball ignores Line of Sight
    • Firewall ignores Line of Sight and can be manually targeted at a desired location , and increases lifespan of Wall of Fire to 6.5s instead of 4.5s.
  • 2-2-0:
    • Bolt damage increased to 2 (+1), and projectile size increase
    • Fireball explosion damage increased 1 to 2 (+1)
  • 0-2-1:
    • Bolt pierce increased to 8 (+5), and projectile speed increases
    • Fireball explosion pierce increased to 20 (+5)
    • Firewall pierce increased to 15 (+5).
  • 0-2-2:
    • Base tower gains camo detection, and all new attacks can affect camo

Attack Interactions[]

See also: Attack Interactions/Bloons TD 6/Magic
Updated as of Version 34.0
Base attack(s)
  • Bolt:
    • Energy Type (pops Black, White, Frozen) Energy
    • Single Projectile Single Projectile
    • Straight Attack Straight Attack
  • Fireball (Projectile):
    • Fire Type (pops Black, White, Lead, Frozen) Fire
    • Single Projectile Single Projectile
    • Straight Attack Straight Attack
  • Fireball (Explosion):
    • Explosion Type (pops White, Purple, Lead, Frozen) Explosion
    • Burst (bursts from fireball) Burst
  • Firewall:
    • Fire Type (pops Black, White, Lead, Frozen) Fire
    • On-Track (unspecified variant) On Track
    • Spawn On-Map (Every 6.5 seconds randomly placed onto nearby track Spawn
    • Contact Damage (1 damage every 0 Contact Damage


Updated as of Version 43.0. Listed prices exclude external buffs, any sacrifices, and Monkey Knowledge.
[Module | Data] Purchase Sell
Costs Easy Medium Hard Impoppable Easy Medium Hard Impoppable
Upgrade (X-2-X) $680 $800 $865 $960 -
Total (0-2-0) $1,210 $1,425 $1,540 $1,710 $847 $998 $1,078 $1,197
Crosspath (1-2-0) $1,335 $1,575 $1,700 $1,890 $935 $1,103 $1,190 $1,323
Crosspath (2-2-0) $1,715 $2,025 $2,185 $2,430 $1,201 $1,418 $1,530 $1,701
Crosspath (0-2-1) $1,465 $1,725 $1,865 $2,070 $1,026 $1,208 $1,306 $1,449
Crosspath (0-2-2) $1,720 $2,025 $2,190 $2,430 $1,204 $1,418 $1,533 $1,701

This upgrade's prices (or included crosspath's prices) are affected by the following MK: MagicTricksIcon Magic Tricks, BetterSellDealsIcon Better Sell Deals



Wall of Fire is a low-cost method for general bloon cleanup for a rather lower price. It is effective at weakening a large wave of relatively weak bloons, or it can be used to clean up a few spaced bloons that sneak by. With 0-2-2, it is also a very cheap reliable solution against Camo Leads. Purple Bloons will instantly remove the Wall of Fire; ensure good Purple popping power is also included in the main defense, such as a 3-0-2 Ninja.

Traditionally, Wall of Fire was one of the most popular upgrades used for Race Events due to its low price and relatively high pierce, but due to various nerfs for the upgrade and the rise of upgrade restrictions on Race Events, Walls of Fire have seen less overall usage. However, it remains a useful source of cheap damage, as long as Purple Bloon popping power is managed properly so as to retain the Walls of Fire. But with the 33.0 nerfs, it is mostly used on races with two close alternate paths or a saveup for Dragon's Breath, as running the Guided Magic crosspath is mandatory for full uptime with Monkey Knowledge, but its total potential popping power is reduced to a third of the Wall of Fire's capabilities before the nerf. It is still a decent race option when better options are disabled.

Crosspath choice for Wall of Fire depends on what is needed. Multiple groups of 0-2-0 Wizard Monkeys on nearby track generally the best choice for maximizing damage. 0-2-1 adds better grouped popping and 0-2-2 is for beating Camo Bloons such as Camo Leads. 1-2-0 gives manual control over the Wall of Fire alongside permanent uptime with Lingering Magic, but 2-2-0 currently does nothing for the Wall of Fire at all. Upgrades at Tier 3 and above are capable of directly enhancing Wall of Fire, for instance Arcane Mastery further increasing range of the moveable blazes, Dragon's Breath for faster-popping blazes, and Necromancer: Unpopped Army and above for higher-damage blazes, though Shimmer appreciates Wall of Fire for general cleanup.


  • One Wall of Fire with Lingering Magic and Guided Magic (1-2-0) can be used near the exit to catch any leaking bloons.
  • Wall of Fire is very good DPS for bloon rounds, and fairly good support DPS for MOABs and Ceramics.
    • However, it can be inconsistent, as there is downtime where no Walls of Fire are set, unless with 1-2-0 crosspath.
  • One 0-2-2 Wall of Fire is a low-cost, reliable way to deal with Camo Leads.
  • Note that Wall of Fire extinguishes when Purple Bloons touch Wall of Fire, as of Version 8.1. It is useful not to place Wall of Fire too close to the entrance, as well as to be sure that other towers can pop Purples before reaching any Walls of Fire.
  • The Wall of Fire attack always targets Close by default. Choose a location where the Wall of Fire attack would benefit the best for the Wizard, preferably a location where it acting as a chokepoint would be optimal.
    • 1-2-0 Walls of Fire can be used to anti-stall bloons coming from the entrance provided that the Wizard itself can cover the track's entrance.
  • Because of the new Version 22.0 changes, selling and rebuying the Wall of Fire has no use for increasing DPS because the Wall of Fire attack undergoes initial cooldown before spawning its first firewall, and firewalls disappear upon selling of the parent Wizard Monkey.
  • Add the Lingering Magic MK to make Wall of Fire last for 5.4s instead of 4.5s (7.8s instead of 6.5s with Guided Magic), a +20% lifespan increase. Instead of 69% (100% with 1-2-0) uptime, the Wall of Fire attack has 83% (120% with 1-2-0) uptime. This makes uptime permanent with Guided Magic, although on occasion the extra pierce and camo detection outweigh the full uptime.

Version History[]

Balance Changes[]

Wall of Fire had a notorious history of combating grouped bloons extremely effectively for its price while formerly relying on RNG for the firewall placement, especially when the attack was spammed. This made it formerly considered a very overpowered upgrade. A series of pierce nerfs, damage nerfs, a disintegration upon contact with Purples, and several sell-and-rebuy countermeasures have been implemented over time to reduce the strength of Wall of Fire compared to when it was first released into the game. Several quality-of-life changes were added in between.

Version 25.0 removed the random placement of the Wall of Fire attack in order to reduce its RNG factor, while Version 33.0 added a target marker for the guided magic crosspath to encourage more crosspath diversity and further give control over Wall of Fire placement. Version 39.0 reduced its cost and increased effectiveness of Guided Magic crosspath after nerfing its uncrosspathed strength in Version 33.0.

  • NERF Wall of Fire no longer has infinite pierce. Instead, it now has 20 pierce per flame.
  • NERF Cost of Wall of Fire increased ($1,100 → $1,300).
  • BUFF Guided Magic allows Wall of Fire to ignore Line of Sight.
  • NERF Wall of Fire does damage half as often.
  • BUFF Cost of Wall of Fire decreased ($1,300 → $900).
  • BUFF Dragon's Breath and above now deploy Walls of Fire at a faster rate.
  • BUFF [Bug] Wall of Fire (unintentionally) pops Purple Bloons.
  • NERF Wall of Fire no longer pops Purple Bloons without support.
  • NERF Wall of Fire now disappears upon becoming impacted by a Purple Bloon instead of simply allowing the Purple Bloon to pass by untouched.
  • BUFF Wall of Fire now (correctly) can be deployed/shot further when the Wizard Monkey has increased range.
  • BUFF 120 Wizard now uses tower targeting priority to guide the Wall of Fire.
  • NERF x2x Wall of Fire pierce reduced from 20 → 15. Requires Intense Magic for 20 Wall of Fire pierce.
Some changes have been made to wall of fire to improve race balance in particular
~ Ninja Kiwi
  • NERF Wall of Fire attack begins on cooldown when the upgrade is purchased.
  • NERF Wall of Fire now saves the time remaining on its attack cooldown, rather than always immediately spawning upon starting a round from a game save.
  • NERF Wall of Fire attack projectiles are removed when the tower is sold.
Wall of Fire has been reworked in order to cut down on cases of frustrating randomness as well as the initial cooldown on the attack being reduced. Additionally at the highest tier all fire attacks will be further enhanced in damage
~ Ninja Kiwi
  • BUFF Wall of Fire now targets onto the closest track position by default.
  • BUFF Wall of Fire initial cooldown reduced from 5.5s → 1s.
  • BUFF Wall of Fire damage now increases with Wizard Lord Phoenix.
As Wall of Fire still stands out too much for a Tier 2 upgrade, it is seeing a nerf with some power being shifted further up to the T3 instead. In contrast, Fireball continues to underwhelm, so is seeing an initial buff plus a larger buff at T3.
~ Ninja Kiwi
  • NERF Wall of Fire pierce refreshment rate decreased from 0.1s → 0.15s. However, Dragon's Breath and higher will retain the old pierce refresh rate.
    • Note: Ninja Kiwi described that Version 29.0 balance change as a nerf to "tic rate". However, community testing has confirmed that this is only a nerf to the pierce refreshment rate.
  • NERF 0-2-1 pierce bonus to Wall of Fire reduced from +5 → +4
  • BUFF Affected by Fireball attack speed buff
As base Wizard shines in no way & doesn’t lead into any immediately good cheap lower tiers aside from Wall of Fire, the base price is being slightly lowered at the cost of an increase to Wall of Fire. [...]
~ Ninja Kiwi
  • NERF Wall of Fire price increased from $900 -> $950
    • Total price increase is +$25, due to the price decrease of base Wizard.
  • BUFF [Undocumented] Wall of Fire and Fireball is no longer single-layer damage, allowing for damage scaling for Wall of Fire on pre-freeplay rounds.
Wall of Fire’s exceptional T2 power needs to be moved around for improved crosspathing, along with a slight nerf to Phoenix as it is currently performing too well, both of these upgrades are shifting some of their power into Dragon’s Breath so it can stand out as more than just a buff to WoF & stepping stone to Phoenix. [...]
~ Ninja Kiwi
  • NERF Wall of Fire rehit rate decreased from 0.1s → 0.15s. Does not affect Dragon's Breath and above.
    • Note: Ninja Kiwi described that Version 33.0 balance change as a nerf to "damage Tic [sic]". However, community testing has confirmed that this nerf is actually a nerf to the rehitting rate, making this nerf a follow-up nerf to Wall of Fire.
  • NERF Wall of Fire wall spawn rate reduced 5.5s → 6.5s
  • NERF x-2-0 Wall of Fire pierce per tic reduced from 15 → 10
  • NERF 0-2-1 Wall of Fire pierce per tic reduced from 19 → 15
  • BUFF 1-2-0 Wall of Fire duration increased 4.5s → 5.5s
  • BUFF 1-2-0 Wall of Fire no longer auto-targets but gains a target marker (like x3x Engineer)
  • BUFF Archmage with the Wall of Fire crosspath now increases blaze MOAB-class damage and doubles rate of producing blazes, in addition to benefits from the Fireball crosspath.
We set up for this Wall of Fire change quite a while ago, however finally it feels that Wall of Fire has cooled off enough to smooth out the curve a little more, granting it seamless uptime with crosspathing and a lower price tag. [...]
~ Ninja Kiwi
  • BUFF Wall of Fire cost decreased ($950 → $800)
  • BUFF 1-2-0 Wall of Fire further increases duration of blaze (5.5s → 6.5s)

Bug Fixes and General Changes[]

Extra Notes (Version History)[]


When a fireball explodes:

When deploying a Wall of Fire blaze:


Official artwork[]




  • In Version 8.0, there was a bug where all Walls of Fire could pop Purples as a result of the Blooncineration buff. This has been fixed on Version 8.1.
  • Before version 33.0, With the Guided Magic crosspath, the Walls of Fire were placed closest to the Wizard if no bloon is in range of the Wizard during the time of deployment.
  • Before Version 22.0, Wall of Fire formerly always spawned immediately upon beginning a reloaded save file, but now Wall of Fire projectiles save their remaining attack cooldowns. Because the attack cooldown naturally always could pass over rounds even if not going back to the save, the change where the save file saves the remaining attack cooldown for the Wall of Fire attack is considered a full nerf.
  • The addition of both an initial cooldown for the Wall of Fire attack and removal of the Wall of Fire blaze upon selling prevents sell-and-rebuy spamming strategies. The sell-and-rebuy strategy for Wall of Fire at the time was extremely dependent on RNG, and caused players to complain about its combined unfair sequentially precise micro and RNG-dependency in Race Events. Using a macro to apply the sell-and-rebuy spamming is considered cheating in the BTD6 fanbase, which called on its nerfing.
  • The filenames for the sound effects representing Wall of Fire spawning are named FireBall01.wav to FireBall05.wav. Possibly, those sounds were originally intended to be used for the Fireball attack but were instead reused for Wall of Fire.