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). For a very cheap price, the Wall of Fire can pop up to 20 bloons per 0.1 seconds, a significantly large amount of bloons for its cost, but the downside is that the fire wall is very random and that it cannot pop Purple Bloons without support, a property similar to most of the Wizard Monkey's other upgrades. Costs $765 Easy, $900 on Medium, $970 on Hard, and $1080 on Impoppable.


  • Having a large group of Walls of Fire is enough to burn down many grouped bloons effectively.
  • One 0/2/2 Wall of Fire makes a cheapish reliable popper of 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 reliably pop such Purples beforehand before reaching any Walls of Fire.
  • One Wall of Fire, particularly a 0/2/2 Wall of Fire, can be used near the exit to catch any leaking bloons.

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.
Community content is available under CC-BY-SA unless otherwise noted.