Fire

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A Heavy on fire.
This article is about fire produced by weapons. For environmental fire, see this article.
I appear to have burst into flames.
The Spy on the blatantly obvious

Fire, or afterburn, refers to the damage-over-time effect inflicted on a player when hit by a variety of weapons, most commonly those of the Pyro. Fire is useful for hit-and-run tactics and for weakening or finishing off an opponent if the damage from the weapon alone is not enough to kill them. This allows attackers to score kills even while dead, as the fire damage may finish off a wounded opponent.

Upon being set aflame, a player's character will automatically scream out that they are on fire, alerting nearby Medics and teammates to their plight. Setting an opponent on fire also creates a disorienting effect on their screen view (flames will engulf the edges of the screen and a burning sound is heard). This can be used to a team's advantage if the Pyro is able to ambush a group of attacking foes. Snipers lit on fire will find it extremely difficult to aim, as the scoped view will move every time the Sniper takes damage from the burning (an effect the Sniper can prevent while fully-charged by equipping the Cozy Camper). When calling for a Medic, the balloon with the Medic symbol will be on fire, notifying a Medic that his teammate is being damaged by afterburn. This helps prioritise burning players as an urgent healing target.

Fire can be used to Spy check. A small burst of flame will ignite an enemy Spy, even if cloaked or disguised. Burning players give off an additional coloured particle effect revealing their true allegiance; this is a useful effect for distinguishing disguised Spies from teammates.

Afterburn from any source can be used to disrupt healing from the various mediguns and fire shield resistance from the Vaccinator. Afterburn reduces all direct Medic healing and resist shields by 20%.

The fire effect starts immediately upon damage from a weapon that causes it. Afterburn damages a player every half-second for 4 HP each tick (1 HP each tick for the Degreaser), totaling 80 damage over those ten seconds (20 damage for the Degreaser). Each fire effect from a flamethrower can last up to 10 seconds, afterburn duration will ramp up from 3 to 10 seconds based on how long the target was in direct contact with the flame. Flare guns, burning arrows, and the Huo-Long Heater's ring of fire apply 7.5 seconds of afterburn, while the afterburn from the Cow Mangler 5000's charged shot lasts 6 seconds. Additional hits from these weapons will restart the duration of the afterburn.

Afterburn damage cannot crit; however, it can mini-crit if the target is under a mini-crit debuff, such as being covered in Jarate, marked for death, or if the attacking player is buffed by the Buff Banner.

Note that enemy Pyros cannot be set on fire (as Pyros are normally immune to afterburn), except by the Dragon's Fury and the Gas Passer. While Pyros still take contact damage from direct flame attacks, they will not take further damage over time. The Pyro does, however, count as on fire for a brief second while he appears with the charred graphical effect after taking damage from a fire-inducing weapon, and while the Pyro takes no additional damage, the Pyro can still suffer critical hits from the Sun-on-a-Stick and Flare Gun, and mini-crits from the Detonator, Scorch Shot, Axtinguisher, and Postal Pummeler. A Spy disguised as a Pyro from either team, however, will still be lit on fire and take afterburn damage.

It is possible to allow gibs to catch fire (if a player is gibbed while on fire) with the cl_burninggibs command set to 1.

Damage and function times

See also: Damage
Damage and function times
Damage type Fire
Ranged or Melee damage? Untyped
Damage
Afterburn 4 / tick
80 total
Afterburn (mini-crit) 5 / tick
100 total
Function times
Attack interval 0.5 s
Afterburn duration 3-10 s
Values are approximate and determined by community testing.

Weapons which inflict afterburn

Surviving fire

The following will extinguish a player who is on fire:

The following methods do not extinguish the afterburn, but can help burning players survive by healing faster than the afterburn can deal damage or by mitigating afterburn's damage:

  • Being healed by a Medic, a Dispenser, or the Payload cart for less than a full second.
  • Drinking Bonk! Atomic Punch will stop any afterburn damage, although it may resume after the effects of Bonk! have worn off. Additionally, the damage taken from the fire damage will cause a slow effect.
  • Any form of weapon-based healing aside from the Conniver's Kunai, such as the Eyelander or Black Box.
  • Equipping weapons that increase the player's maximum health, such as the Bootlegger or Battalion's Backup.
  • Being buffed by the Battalion's Backup.
  • Damage resistance provided by the Chargin' Targe, Splendid Screen, and Tide Turner.
  • The Soldier's passive health regeneration while equipped with the Concheror.
  • The Sniper's passive health regeneration while equipped with the Cozy Camper.
  • The Medic's passive health regeneration.
  • The Medic's Oktoberfest taunt.
  • Holding the Amputator out as Medic.
  • The Spy's 20% damage resistance when cloaking.
  • The Dead Ringer's 75% damage resistance upon being struck by fire.
  • The Dead Ringer's cloak damage resistance, which fades from 65% to 20% in 3 seconds.

Weapon specific

The following weapons provide additional resistance or vulnerability against fire-based attacks. Note that both contact damage (barring the melee damage from the Sharpened Volcano Fragment) and afterburn damage is modified.

Related achievements

Achieved.png General

Escape the Heat
Escape the Heat
Jump into a pool of refreshing water while on fire.


Flamethrower
Flamethrower
Set five enemies on fire in 30 seconds.


Leaderboard class soldier.png Soldier

Semper Fry
Semper Fry
Kill 20 enemies while you are on fire.


Leaderboard class pyro.png Pyro

Attention Getter
Attention Getter
Ignite 100 enemies with the flare gun.


Burn Ward
Burn Ward
Ignite 3 Medics that are ready to deploy an ÜberCharge.


Controlled Burn
Controlled Burn
Ignite 50 enemies capturing one of your control points.


Firewall
Firewall
Ignite 5 Spies who have a sapper on a friendly building.


Got A Light?
Got A Light?
Ignite an enemy Spy while he's flicking a cigarette.


Next of Kindling
Next of Kindling
Ignite an enemy, and the Medic healing him.


Pyromancer
Pyromancer
Do 1 million points of total fire damage.


Spontaneous Combustion
Spontaneous Combustion
Ignite 10 cloaked Spies.


Weenie Roast
Weenie Roast
Have 2 enemy Scouts on fire at the same time.
Baptism by Fire
Baptism by Fire
Force 10 burning enemies to jump into water.


Combined Fire
Combined Fire
Use your shotgun to finish off 20 players you've ignited.


Cooking the Books
Cooking the Books
Ignite 5 enemies carrying your intelligence.


Firewatch
Firewatch
Ignite 10 Snipers while they are zoomed in.


I Fry
I Fry
Ignite 10 disguised Spies.


Makin' Bacon
Makin' Bacon
Kill 50 Heavies with your flamethrower.


Pilot Light
Pilot Light
Ignite a rocket-jumping Soldier while he's in midair.


Second Degree Burn
Second Degree Burn
Kill a burning enemy who was ignited by another Pyro.


Trailblazer
Trailblazer
Ignite 10 enemies that have recently used a teleporter.

Leaderboard class heavy.png Heavy

Rasputin
Rasputin
In a single life, get shot, burned, bludgeoned, and receive explosive damage.


Leaderboard class engineer.png Engineer

The Extinguished Gentleman
The Extinguished Gentleman
Have dispensers you built extinguish 20 burning players.


Leaderboard class medic.png Medic

Autoclave
Autoclave
Assist in burning 5 enemies with a single ÜberCharge on a Pyro.


Infernal Medicine
Infernal Medicine
Extinguish 100 burning teammates.


Leaderboard class sniper.png Sniper

Friendship is Golden
Friendship is Golden
Extinguish a burning teammate with your Jarate.


Leaderboard class spy.png Spy

Burn Notice
Burn Notice
Survive 30 seconds after being ignited while cloaked.


Kill icons

Unused kill icons

Update history

October 9, 2012 Patch

  • Overhealed players that are bleeding or on fire can now pickup healthkits to remove these conditions.

October 20, 2017 Patch

  • Afterburn
    • Flamethrowers no longer apply maximum-duration afterburn on contact. Afterburn duration is now based on how long the target is in contact with direct flames -- starting at a minimum of 3 seconds, and stacking to a maximum of 10 seconds.
    • Per-tick afterburn damage increased to 4 (from 3), for a total of 8 damage per-second (up from 6 per-second)
    • Flareguns now apply 7.5 seconds of afterburn (down from 10 seconds), resulting in the same total damage as before
    • Afterburn now reduces all direct Medic healing and resist shields by 20%
      • Note: This effect was previously applied by direct flames from all flamethrowers (at 25%), but was moved to afterburn, and slightly lowered

October 24, 2017 Patch

Unused content

  • All classes (except for the Pyro) have an unused death animation when on fire.

Bugs

  • A burning player will cease to take damage if the enemy who inflicted the afterburn changes teams, but will visually remain on fire for the default duration.
  • Being set on fire and then switching to another team will cause the HUD to have the afterburn fire effect until the player disconnects. However, the player will not say fire-related responses or receive damage.
  • Occasionally the afterburn effect will continue to stay on a player that's recently been burnt, but survived.
  • Afterburn from the Dragon's Fury does not reduce direct Medic healing and resist shields by 20%.
  • Flames can shoot over long distances if the Pyro uses the Detonator or Scorch Shot to build up speed and is stuck in a map surface/object.[1]

Notes

  • Burning ragdolls will not be extinguished when submerged in water.

References