Creates a super hot wall of fire across the track to roast the Bloons as they pass.
~ Wall of Fire upgrade description

The Wall of Fire is the second upgrade of Path 2 for the Wizard Monkey in BTD6. It creates a crater of fire randomly on the track nearby that lasts for 5 seconds, refreshing every 5.5 seconds (4.5 seconds for Dragon's Breath and subsequent upgrades). The Wall of Fire can pop up to 20 bloons every 0.1 seconds, which is an excellent amount of popping power for a relatively low cost. However, the fire wall's placement is random, making it somewhat unreliable. It also cannot pop Purple Bloons without support. It costs $765 on Easy, $900 on Medium, $970 on Hard, and $1080 on Impoppable.


  • 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 a small downtime where no Walls of Fire are set.
  • One 0/2/2 Wall of Fire is a low-cost, reliable way to deal with Camo Leads.
  • It should be noted 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.
  • One Wall of Fire can be used near the exit to catch any leaking bloons.
  • When a Wall of Fire Wizard is used exclusively for the Wall of Fire attack, choosing to place the Wall of Fire only touching one point of the track means that it is easy to tell where the Wall of Fire will be and improve its consistency. However, there is a chance a Wall of Fire placed touching multiple tracks can resummon its fire in front of a bloon that has already taken damage, but this is still inconsistent.

Update HistoryEdit


Nerf Wall of Fire no longer has infinite pierce. Instead, it now has 20 pierce per frame.


Nerf Cost of Wall of Fire increased ($1100 → $1300)


Nerf Wall of Fire does damage half as often.

Buff Cost of Wall of Fire decreased ($1300 → $900)

Buff 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.



  • 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.
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