Unusual

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See also: Particle effects
Viewmode unusual.png
Backpack Napper's Respite.png
Unusual Napper's Respite 
Level 73 Hat
★ Unusual Effect: Circling Heart
 
After a long day of burning scouts.
There is nothing unusual about this man's head!
The Soldier on Unusual hats

The Unusual quality is an item quality used on cosmetic items, taunts, and weapons. Unusual quality items have special particle effects attached to them, and are considered to be some of the rarest items in Team Fortress 2. There are currently 460 cosmetic items that can have one of 129 total effects, 72 taunts that can have one of 35 total effects, and 45 weapons that can have one of 3 effects. Unusual items can be obtained mainly by opening Mann Co. Supply Crates and cases. There is less than a 1% chance of obtaining an Unusual quality item through crates and cases.[1] Unusual quality items can be obtained in any crate or case, but the effect pools may vary depending on the crate or case series. These effect pools are most often referred to as "generations".

The hexadecimal color code for Unusual items is
#8650AC
.

Unusual effects

Standard Series

Standard Unusual effects can be found in specific crate series.

Gen 1

The first generation of standard Unusual effects was added in the Mann-Conomy Update. They can be obtained in crates Series #1 through Series #25, as well as any case. If obtained through a crate, the hat may be any hat from any Mann Co. Supply Crate. If obtained through the case, the hat will be exclusive to that case.

List of Gen 1 Unusual effects
Cosmetic effects
Unusual Burning Flames.png
Unusual Circling Heart.png
Unusual Circling Peace Sign.png
Unusual Circling TF Logo.png
Unusual Green Confetti.png
Unusual Green Energy.png
Burning Flames Circling Heart Circling Peace Sign Circling TF Logo Green Confetti Green Energy
Unusual Haunted Ghosts.png
Unusual Massed Flies.png
Unusual Purple Confetti.png
Unusual Purple Energy.png
Unusual Scorching Flames.png
Unusual Searing Plasma.png
Haunted Ghosts Massed Flies Purple Confetti Purple Energy Scorching Flames Searing Plasma
Unusual Sunbeams.png
Unusual Vivid Plasma.png
Sunbeams Vivid Plasma


Gen 2

The second generation of standard Unusual effects was added in the August 18, 2011 Patch. They can be obtained in crates Series #26 through Series #58, as well as any case. If obtained through a crate, the hat may be any hat from any Mann Co. Supply Crate. If obtained through the case, the hat will be exclusive to that case.

List of Gen 2 Unusual effects
Cosmetic effects
Unusual Blizzardy Storm.png
Unusual Bubbling.png
Unusual Nuts n' Bolts.png
Unusual Orbiting Fire.png
Unusual Orbiting Planets.png
Unusual Smoking.png
Blizzardy Storm Bubbling Nuts n' Bolts Orbiting Fire Orbiting Planets Smoking
Unusual Steaming.png
Unusual Stormy Storm.png
Steaming Stormy Storm


Gen 3

The third generation of standard Unusual effects was added in the June 19, 2013 Patch. They can be obtained in crates and cases Series #59 through Series #103, as well as any case. If obtained through a crate, the hat may be any hat from any Mann Co. Supply Crate. If obtained through the case, the hat will be exclusive to that case.

List of Gen 3 Unusual effects
Cosmetic effects
Unusual Aces High RED.png
Unusual Aces High BLU.png
Unusual Cloud 9.png
Unusual Dead Presidents.png
Unusual Disco Beat Down.png
Unusual Kill-a-Watt.png
Aces High (RED) Aces High (BLU) Cloud 9 Dead Presidents Disco Beat Down Kill-a-Watt
Unusual Miami Nights.png
Unusual Terror-Watt.png
Miami Nights Terror-Watt


Community Sparkle

An exclusive Unusual effect was added in the First Community Contribution Update. It is automatically applied to Community and Self-Made items.

Community Sparkle Unusual effects
Cosmetic effects
Unusual Community Sparkle.png
Taunt effects
Unusual Community Sparkle Taunt.png
Weapon effects
Unusual Community Sparkle Weapon.png
Community Sparkle Community Sparkle Community Sparkle


Summer Series

Summer Unusual effects can be found in specific Summer crates. During Summer events, they're available in all other crate series.

Summer 2020 Pack

The first Summer generation of Unusual effects was added in the Summer 2020 Pack update. Currently, they can be obtained by opening a Summer 2020 Cosmetic Case.

List of Summer 2020 Pack Unusual effects
Cosmetic effects
Unusual Aromatica.png
Unusual Bee Swarm.png
Unusual Chromatica.png
Unusual Frisky Fireflies.png
Unusual Kaleidoscope.png
Unusual Prismatica.png
Aromatica Bee Swarm Chromatica Frisky Fireflies Kaleidoscope Prismatica
Unusual Smoldering Spirits.png
Unusual Verdatica.png
Unusual Wandering Wisps.png
Smoldering Spirits Verdatica Wandering Wisps


Scream Fortress Series

Scream Fortress Unusual effects can be found in specific Scream Fortress crates. During Scream Fortress events, they're available in all other crate series.

Very Scary Halloween Special

The first Scream Fortress generation of Unusual Effects was added in the Very Scary Halloween Special. They could be obtained in any crate during the event.

List of Very Scary Halloween Special Unusual effects
Cosmetic effects
Unusual Cauldron Bubbles.png
Unusual Cloudy Moon.png
Unusual Eerie Orbiting Fire.png
Unusual Flaming Lantern.png
Cauldron Bubbles Cloudy Moon Eerie Orbiting Fire Flaming Lantern


Spectral Halloween Special

The second Scream Fortress generation of Unusual Effects was added in the Spectral Halloween Special. They could be obtained in any crate during the event.

List of Spectral Halloween Special Unusual effects
Cosmetic effects
Unusual Harvest Moon.png
Unusual It's A Secret To Everybody.png
Unusual Knifestorm.png
Unusual Misty Skull.png
Unusual Stormy 13th Hour.png
Harvest Moon It's A Secret To Everybody Knifestorm Misty Skull Stormy 13th Hour


Scream Fortress V

The third Scream Fortress generation of Unusual effects was added in the Scream Fortress V update. They could be obtained in any crate during the event.

List of Scream Fortress V Unusual effects
Cosmetic effects
Unusual Arcana.png
Unusual Chiroptera Venenata.png
Unusual Darkblaze.png
Unusual Demonflame.png
Unusual Hellfire.png
Unusual Poisoned Shadows.png
Arcana Chiroptera Venenata Darkblaze Demonflame Hellfire Poisoned Shadows
Unusual Something Burning This Way Comes.png
Unusual Spellbound.png
Something Burning This Way Comes Spellbound


Scream Fortress VI

The fourth Scream Fortress generation of Unusual effects was added in the Scream Fortress VI update. They could be obtained in any crate during the event.

List of Scream Fortress VI Unusual effects
Cosmetic effects
Unusual Amaranthine.png
Unusual Bonzo The All-Gnawing.png
Unusual Ghastly Ghosts Jr.png
Unusual Haunted Phantasm Jr.png
Unusual Stare From Beyond.png
Unusual The Ooze.png
Amaranthine Bonzo The All-Gnawing Ghastly Ghosts Jr Haunted Phantasm Jr Stare From Beyond The Ooze
Taunt effects
Unusual Ghastly Ghosts.png
Unusual Haunted Phantasm.png
Ghastly Ghosts Haunted Phantasm


Scream Fortress VII

The fifth Scream Fortress generation of Unusual effects was added in the Scream Fortress VII update. They could only be obtained by opening a Gargoyle Case during the event. They can still be obtained by opening a Gargoyle Case.

List of Scream Fortress VII Unusual effects
Cosmetic effects
Unusual Ancient Eldritch.png
Unusual Death by Disco.png
Unusual Eldritch Flame.png
Unusual Ether Trail.png
Unusual It's a mystery to everyone.png
Unusual It's a puzzle to me.png
Ancient Eldritch Death by Disco Eldritch Flame Ether Trail It's a mystery to everyone It's a puzzle to me
Unusual Nether Trail.png
Nether Trail


Scream Fortress VIII

The sixth Scream Fortress generation of Unusual effects was added in the Scream Fortress VIII update. They could be obtained in any crate during the event. They can still be obtained by opening a Creepy Crawly Case.

List of Scream Fortress VIII Unusual effects
Cosmetic effects
Unusual Neutron Star.png
Unusual Starstorm Insomnia.png
Unusual Starstorm Slumber.png
Unusual Tesla Coil.png
Neutron Star Starstorm Insomnia Starstorm Slumber Tesla Coil
Taunt effects
Unusual Hellish Inferno.png
Unusual Infernal Flames.png
Unusual Infernal Smoke.png
Unusual Spectral Swirl.png
Hellish Inferno Infernal Flames Infernal Smoke Spectral Swirl


Scream Fortress X

The seventh Scream Fortress generation of Unusual effects was added in the Scream Fortress X update. They could be obtained in any crate during the event. They can still be obtained by opening a Violet Vermin Case.

List of Scream Fortress X Unusual effects
Cosmetic effects
Unusual Brain Drain.png
Unusual Clairvoyance.png
Unusual Galactic Gateway.png
Unusual Head of Steam.png
Unusual Omniscient Orb.png
Unusual Open Mind.png
Brain Drain Clairvoyance Galactic Gateway Head of Steam Omniscient Orb Open Mind
Unusual Ring of Fire.png
Unusual Dark Doorway.png
Unusual The Eldritch Opening.png
Unusual Vicious Circle.png
Unusual White Lightning.png
Ring of Fire The Dark Doorway The Eldritch Opening Vicious Circle White Lightning
Taunt effects
Unusual Acidic Bubbles of Envy.png
Unusual Flammable Bubbles of Attraction.png
Unusual Ominous Night.png
Unusual Poisonous Bubbles of Regret.png
Unusual Roaring Rockets.png
Unusual Spooky Night.png
Acidic Bubbles of Envy Flammable Bubbles of Attraction Ominous Night Poisonous Bubbles of Regret Roaring Rockets Spooky Night


Scream Fortress XI

The eighth Scream Fortress generation of Unusual effects was added in the Scream Fortress XI update. They could be obtained in any crate during the event. They can still be obtained by opening a Spooky Spoils Case.

List of Scream Fortress XI Unusual effects
Cosmetic effects
Unusual Abyssal Aura.png
Unusual Ethereal Essence.png
Unusual Fifth Dimension.png
Unusual Ghastly Grove.png
Unusual Menacing Miasma.png
Unusual Mystical Medley.png
Abyssal Aura Ethereal Essence Fifth Dimension Ghastly Grove Menacing Miasma Mystical Medley
Unusual Twisted Radiance.png
Unusual Valiant Vortex.png
Unusual Verdant Vortex.png
Unusual Vicious Vortex.png
Unusual Violet Vortex.png
Unusual Wicked Wood.png
Twisted Radiance Valiant Vortex Verdant Vortex Vicious Vortex Violet Vortex Wicked Wood
Taunt effects
Unusual Accursed.png
Unusual Bewitched.png
Unusual Eerie Lightning.png
Unusual Enchanted.png
Unusual Jarate Shock.png
Unusual Nether Void.png
Accursed Bewitched Eerie Lightning Enchanted Jarate Shock Nether Void
Unusual Static Mist.png
Unusual Terrifying Thunder.png
Static Mist Terrifying Thunder


Smissmas Series

Smissmas Unusual effects can be found in specific Smissmas crates. During Smissmas events, they're available in all other crate series.

Smissmas 2019

The first Smissmas generation of Unusual effects was added in the Smissmas 2019 update. They could be obtained in any crate during the event. They can still be obtained by opening a Winter 2019 Cosmetic Case.

List of Smissmas 2019 Unusual effects
Cosmetic effects
Unusual Defragmenting Reality RED.png
Unusual Defragmenting Reality BLU.png
Unusual Fragmented Gluons.png
Unusual Fragmented Photons.png
Unusual Fragmented Quarks.png
Unusual Fragmenting Reality.png
Defragmenting Reality (RED) Defragmenting Reality (BLU) Fragmented Gluons Fragmented Photons Fragmented Quarks Fragmenting Reality
Unusual Frozen Icefall.png
Unusual Pyroland Daydream RED.png
Unusual Pyroland Daydream BLU.png
Unusual Refragmenting Reality.png
Unusual Snowblinded.png
Unusual Snowfallen.png
Frozen Icefall Pyroland Daydream (RED) Pyroland Daydream (BLU) Refragmenting Reality Snowblinded Snowfallen
Unusual Sparkling Lights.png
Sparkling Lights
Taunt effects
Unusual Arctic Aurora.png
Unusual Festive Spirit.png
Unusual Good-Hearted Goodies.png
Unusual Magical Spirit.png
Unusual Winter Spirit.png
Unusual Wintery Wisp.png
Arctic Aurora Festive Spirit Good-Hearted Goodies Magical Spirit Winter Spirit Wintery Wisp


Robotic Boogaloo

An exclusive generation of Unusual effects was added in the Robotic Boogaloo update. They could be obtained in any crate during the event. They can still be obtained by opening a Robo Community Crate.

List of Robotic Boogaloo Unusual effects
Cosmetic effects
Unusual Anti-Freeze.png
Unusual Electrostatic.png
Unusual Green Black Hole.png
Unusual Memory Leak.png
Unusual Overclocked.png
Unusual Phosphorous.png
Anti-Freeze Electrostatic Green Black Hole Memory Leak Overclocked Phosphorous
Unusual Power Surge.png
Unusual Roboactive.png
Unusual Sulphurous.png
Unusual Time Warp.png
Power Surge Roboactive Sulphurous Time Warp


Love & War Update

An exclusive generation of Unusual effects was added in the Love & War Update. They can be obtained through the Mann Co. Audition Reel, Mann Co. Director's Cut Reel and Taunt Unusualifiers.

List of Love & War Update Unusual effects
Taunt effects
Unusual '72.png
Unusual Fountain of Delight.png
Unusual Holy Grail.png
Unusual Mega Strike.png
Unusual Midnight Whirlwind.png
Unusual Screaming Tiger.png
'72 Fountain of Delight Holy Grail Mega Strike Midnight Whirlwind Screaming Tiger
Unusual Showstopper RED.png
Unusual Showstopper BLU.png
Unusual Silver Cyclone.png
Unusual Skill Gotten Gains.png
Showstopper (RED) Showstopper (BLU) Silver Cyclone Skill Gotten Gains


End of the Line Update

An exclusive generation of Unusual effects was added in the End of the Line Update. They could be obtained in any crate during the event. They can still be obtained by opening an End of the Line Community Crate.

List of End of the Line Update Unusual effects
Cosmetic effects
Unusual Death at Dusk.png
Unusual Frostbite.png
Unusual Molten Mallard.png
Unusual Morning Glory.png
Death at Dusk Frostbite Molten Mallard Morning Glory


Gun Mettle Update

An exclusive generation of Unusual effects was added in the Gun Mettle Update. They can be obtained through Decorated cases.

List of Gun Mettle Update Unusual effects
Weapon effects
Unusual Cool.png
Unusual Energy Orb.png
Unusual Hot.png
Unusual Isotope.png
Cool Energy Orb*
*Removed from all Unusual pools in the Tough Break Update
Hot Isotope


Invasion Community Update

An exclusive generation of Unusual effects was added in the Invasion Community Update. They could be obtained in any crate during the event. They can still be obtained by opening a Confidential Collection Case or a Quarantined Collection Case.

List of Invasion Community Update Unusual effects
Cosmetic effects
Unusual Abduction.png
Unusual Ancient Codex.png
Unusual Atomic.png
Unusual Electric Hat Protector.png
Unusual Galactic Codex.png
Unusual Magnetic Hat Protector.png
Abduction Ancient Codex Atomic Electric Hat Protector Galactic Codex Magnetic Hat Protector
Unusual Nebula.png
Unusual Subatomic.png
Unusual Voltaic Hat Protector.png
Nebula Subatomic Voltaic Hat Protector


Other Unusual Items

Two special items of Unusual quality were introduced in the Scream Fortress Update: the Haunted Metal Scrap and Horseless Headless Horsemann's Headtaker. The Haunted Metal Scrap is given to any player who has taken part in defeating the Horseless Headless Horsemann with a melee weapon during a Halloween event. The Horseless Headless Horsemann's Headtaker can be obtained by crafting, and is statistically identical to the Eyelander. Despite having the Unusual quality, these items have no unique particle effects.

Backpack Haunted Metal Scrap.png
Unusual Haunted Metal Scrap 
Level 4 Craft Item
 
This scrap metal was taken from the Horseless Headless Horsemann. It whispers faintly...'heads'...

( Achievement Item: Not Tradable or Marketable )
Backpack Horseless Headless Horsemann's Headtaker.png
Unusual Horseless Headless Horsemann's Headtaker 
Level 1-100 Axe
This weapon has a large melee range and deploys and holsters slower
No random critical hits
-25 max health on wearer
 
Cursed by dark spirits similar to those that dwell within the Eyelander.

( Not Tradable or Marketable )

Unused content

Unused Unusual effects

These effects either currently or previously existed in the game's files, but were left unused. They are named by their internal filenames, as they have no official names. Please note that certain effects have been modified to display correctly.

Currently unused effects

These effects currently exist in the files of the game, and aren't used anywhere.

List of currently unused Unusual effects
UNUSED AAA AAA.png
UNUSED Balloon.png
UNUSED Beams1 Newstyle.png
UNUSED Beany Green.png
UNUSED Beany Hearts.png
UNUSED Beany Target.png
AAA_AAA balloon beams1_newstyle beany_green beany_hearts beany_target
UNUSED Beany TF.png
UNUSED Circling Glow.png
UNUSED Circling Skull.png
UNUSED Crisp Spotlights Cones03.png
UNUSED Halo.png
UNUSED Orbit.png
beany_tf circling_glow circling_skull crisp_spotlights_cones03 halo orbit
UNUSED Orbit Fullmoon Cloudy.png
UNUSED Sparkler Green.png
UNUSED Sparkler Orange.png
UNUSED Sparkles1.png
UNUSED Sparkles2.png
UNUSED Sparkles3.png
orbit_fullmoon_cloudy sparkler_green sparkler_orange sparkles1 sparkles2 sparkles3
UNUSED Spray Confetti.png
UNUSED Storm Blood.png
UNUSED Stormcloud.png
UNUSED Symbols Parent Ice.png
UNUSED Test.png
spray_confetti storm_blood stormcloud symbols_parents_ice test


Removed unused effects

These effects previously existed in the files of the game, but have since been removed.

List of removed Unusual effects
Cosmetic effects
UNUSED Orbit Shells.png
orbit_shells


List of Unusual Items

Update history

September 30, 2010 Patch (Mann-Conomy Update)
  • [Undocumented] Added Unusual quality, along with the following Gen 1 effects: Burning Flames, Circling Heart, Circling Peace Sign, Circling TF Logo, Green Confetti, Green Energy, Haunted Ghosts, Massed Flies, Purple Confetti, Purple Energy, Scorching Flames, Searing Plasma, Sunbeams, Vivid Plasma

August 18, 2011 Patch (Manno-Technology Bundle)

  • [Undocumented] Added the following Gen 2 effects: Blizzardy Storm, Bubbling, Nuts n' Bolts, Orbiting Fire, Orbiting Planets, Smoking, Steaming, Stormy Storm

August 23, 2011 Patch

  • Fixed the sunbeams hat effect

October 27, 2011 Patch (Very Scary Halloween Special)

  • Any unusual hats uncrated during the event will be Halloween-themed
  • [Undocumented] Added the following Very Scary Halloween Special effects: Cauldron Bubbles, Cloudy Moon, Eerie Orbiting Fire, Flaming Lantern

October 26, 2012 Patch (Spectral Halloween Special)

  • [Undocumented] Added the following Spectral Halloween Special effects: Harvest Moon, It's A Secret To Everybody, Knifestorm, Misty Skull, Stormy 13th Hour

May 17, 2013 Patch (Robotic Boogaloo)

  • [Undocumented] Added the following Robotic Boogaloo effects: Anti-Freeze, Electrostatic, Green Black Hole, Memory Leak, Overclocked, Phosphorous, Power Surge, Roboactive, Sulphurous, Time Warp

June 5, 2013 Patch

  • Unusual effects:
    • Attachment point and offset for particle effects on unusual hats can now be adjusted from the character loadout screen
    • Fixed a bug that would cause unusual effects to float in the air over dead players
    • Fixed a bug that would cause unusual effects to show incorrectly sometimes when spectating other players

June 19, 2013 Patch

  • [Undocumented] Added the following Gen 3 effects: Aces High, Cloud 9, Dead Presidents, Disco Beat Down, Kill-a-Watt, Miami Nights, Terror-Watt

July 11, 2013 Patch

  • Fixed Disco Beat Down unusual effect showing through walls

October 29, 2013 Patch (Scream Fortress V)

  • Enabled Halloween themed Unusual Effects to be found from Mann Co Supply Crates
  • [Undocumented] Added the following Scream Fortress V effects: Arcana, Chiroptera Venenata, Darkblaze, Demonflame, Hellfire, Poisoned Shadows, Something Burning This Way Comes, Spellbound

December 20, 2013 Patch (Smissmas 2013)

  • Unusual effect positioning can now be adjusted for all Cosmetic-slot items
  • Unusual Circling Effects have been given a new origin
  • Unusual effects for all Cosmetic-slot items are now visible in the loadout panel and character HUD

June 18, 2014 Patch (Love & War)

  • Added the Mann Co. Audition Reel. Contains taunts and a rare chance at an unusual taunt
  • Updated Mann Co. Crates to display which Unusual Series they can potentially output
  • [Undocumented] Added the following Love & War effects: '72, Fountain of Delight, Holy Grail, Mega Strike, Midnight Whirlwind, Screaming Tiger, Showstopper, Silver Cyclone, Skill Gotten Gains

October 29, 2014 Patch (Scream Fortress VI)

  • All Unusual hats and taunts that are unboxed during the event will receive Halloween-themed Unusual effects
  • [Undocumented] Added the following Scream Fortress VI effects: Amaranthine, Bonzo The All-Gnawing, Ghastly Ghosts Jr, Haunted Phantasm Jr, Stare From Beyond, The Ooze

November 4, 2014 Patch

  • [Undocumented] Renamed two Unusual effects
    • Haunted Phantasm Jr to Ghastly Ghosts Jr
    • Attrib_Particle86 to Haunted Phantasm Jr

December 8, 2014 Patch (End of the Line Update)

  • [Undocumented] Added the following End of the Line Update effects: Death at Dusk, Frostbite, Molten Mallard, Morning Glory

January 9, 2015 Patch

  • Fixed the Mega Strike unusual taunt effect showing through walls

February 18, 2015 Patch

  • Fixed some Unusual particle effects not drawing correctly

July 2, 2015 Patch (Gun Mettle Update)

  • Fixed not seeing unusual effects during demo playback and while connected to SourceTV
  • [Undocumented] Added the following Gun Mettle effects: Cool, Energy Orb, Hot, Isotope

August 18, 2015 Patch

  • Fixed character loadout menus so they display the particle effects for all equipped Unusual items

October 6, 2015 Patch (Invasion Community Update)

  • [Undocumented] Added the following Invasion Community Update effects: Abduction, Ancient Codex, Atomic, Electric Hat Protector, Galactic Codex, Magnetic Hat Protector, Nebula, Subatomic, Voltaic Hat Protector

October 12, 2015 Patch

  • Fixed Unusual versions of the Taunt: Burstchester not displaying their Unusual effects

October 28, 2015 Patch (Scream Fortress VII)

  • Mann Co Supply Crates will have a chance for a classic Halloween Unusual effect
  • [Undocumented] Added the following Scream Fortress VII effects: Ancient Eldritch, Death by Disco, Eldritch Flame, Ether Trail, It's a mystery to everyone, It's a puzzle to me, Nether Trail

October 29, 2015 Patch

  • Fixed the Invasion Unusual effect "Subatomic" being off-center

July 28, 2016 Patch

  • Fixed not seeing particle effects for Unusual versions of Baseball Bill's Sports Shine, Ritzy Rick's Hair Fixative, and Texas Slim's Dome Shine

December 17, 2015 Patch (Tough Break Update)

  • [Undocumented] Removed Energy Orb Unusual effect from all decorated cases.

October 21, 2016 Patch (Scream Fortress VIII)

  • Added a taunt Unusualifier
    • A new tool that will Unusualify the specified taunt with the Unusual effect listed in the tool's description
    • Can be found as a random bonus item when opening a Creepy Crawly Case
  • Added 8 new community-created Unusual effects
    • 4 new effects for Unusual hats
    • 4 new effects for Unusual taunts
  • All cases and Mann Co. Supply Crates will grant Halloween 2016 Unusual effects instead of their normal Unusual effects
  • [Undocumented] Added the following Scream Fortress VIII effects:
    • Cosmetic effects: Neutron Star, Starstorm Insomnia, Starstorm Slumber, Tesla Coil
    • Taunt effects: Hellish Inferno, Infernal Flames, Infernal Smoke, Spectral Swirl
  • [Undocumented] Doubled the unbox rate of Unusual items

November 18, 2016 Patch

  • Returned Unusual drop chances and possible particles effects to their original values now that Halloween has ended

November 21, 2016 Patch

  • Returned Unusual drop chances and possible particles effects to their original values now that Halloween has ended

June 2, 2017 Patch

  • Fixed the Neutron Star unusual effect being occasionally displaced after the player respawns

December 1, 2017 Patch

  • Fixed rendering issues with the Infernal Flames, Infernal Smoke, Cloudy Moon, It's A Secret To Everybody, Ancient Eldritch, Eldritch Flame, and Death by Disco unusual effects.

December 13, 2017 Patch

  • Fixed a rendering issue with the Spectral Swirl unusual effect

December 21, 2017 Patch (Smissmas 2017)

  • Fixed a rendering issue with the Misty Skull unusual effect

March 28, 2018 Patch #1

  • Fixed the Community Sparkle particle effect not drawing on the viewmodel for players with Community and Self-Made weapons.
  • Updated the Harvest Moon, Dead Presidents, and Circling Peace Sign unusual effects to fix display problems.

October 19, 2018 Patch (Scream Fortress X)

  • Added 17 new community-created Unusual effects
    • 11 new effects for Unusual hats
    • 6 new effects for Unusual taunts
  • All cases will grant Halloween 2018 Unusual effects instead of their normal Unusual effects during the event
  • [Undocumented] Added the following Scream Fortress X effects:
    • Cosmetic effects: Brain Drain, Clairvoyance, Galactic Gateway, Head of Steam, Omniscient Orb, Open Mind, Ring of Fire, The Dark Doorway, The Eldritch Opening, Vicious Circle, White Lightning
    • Taunt effects: Acidic Bubbles of Envy, Flammable Bubbles of Attraction, Ominous Night, Poisonous Bubbles of Regret, Roaring Rockets, Spooky Night
  • [Undocumented] Doubled the unbox rate of Unusual items

October 25, 2018 Patch

  • Updated the Roaring Rockets unusual taunt particle effect

October 30, 2018 Patch

  • Updated the Roaring Rockets unusual taunt particle effect

December 19, 2018 Patch (Smissmas 2018)

  • Updated the Starstorm Slumber unusual effect to fix a display problem

October 10, 2019 Patch (Scream Fortress XI)

  • Added 20 new community-created Unusual effects
    • 12 new effects for Unusual hats
    • 8 new effects for Unusual taunts
  • All cosmetic and taunt Cases will grant Halloween 2019 Unusual effects instead of their normal Unusual effects during the event. This does not include Crates.
  • [Undocumented] Added the following Scream Fortress XI effects:
    • Cosmetic effects: Abyssal Aura, Ethereal Essence, Fifth Dimension, Ghastly Grove, Menacing Miasma, Mystical Medley, Twisted Radiance, Valiant Vortex, Verdant Vortex, Vicious Vortex, Violet Vortex, Wicked Wood
    • Taunt effects: Accursed, Bewitched, Eerie Lightning, Enchanted, Jarate Shock, Nether Void, Static Mist, Terrifying Thunder
  • [Undocumented] Doubled the unbox rate of Unusual items

December 16, 2019 Patch (Smissmas 2019)

  • Added 17 new community-created Unusual effects
    • 11 new effects for Unusual hats
    • 6 new effects for Unusual taunts
  • [Undocumented] Added the following Smissmas 2019 effects:
    • Cosmetic effects: Defragmenting Reality, Fragmented Gluons, Fragmented Photons, Fragmented Quarks, Fragmenting Reality, Frozen Icefall, Pyroland Daydream, Refragmenting Reality, Snowblinded, Snowfallen, Sparkling Lights
    • Taunt effects: Arctic Aurora, Festive Spirit, Good-Hearted Goodies, Magical Spirit, Winter Spirit, Wintery Wisp

August 21, 2020 Patch (Summer 2020 Pack)

  • Added 4 new community-created Unusual effects
    • 9 new effects for hats
  • [Undocumented] Added the following Summer 2020 effects:
    • Cosmetic effects: Bee Swarm, Kaleidoscope, Verdatica, Aromatica, Chromatica, Prismatica, Frisky Fireflies, Smoldering Spirits, Wandering Wisps

Bugs

  • With enough player movement, Unusual effects from the Invasion update (Subatomic, Atomic) will become off-center from the player's head.
    • Unusual effects from the End of the Line update (Morning Glory, Death at Dusk, Molten Mallard) also show similar bugs, except parts of the particle effect (sun, duck respectively) drift a huge distance away from the player.
  • One end of the particle effect on Kill-a-Watt and Terror-Watt may randomly attach to temporarily random areas of a map, causing the effect to stretch from the point through any walls to the wearer's head.
  • Sometimes an Unusual effect floats in the air separated from the player's model instead of sticking to the cosmetic item.
    • This can occur when a player taunts.
    • Effect may also appear on the player's abdomen, or chest; it may also disappear along with the cosmetic.

Notes

Trivia

  • The first Unusual ever uncrated was a Circling Peace Sign Stout Shako.
  • The effects Kill-a-Watt and Terror-Watt's names reference certain measures of electrical power, these being kilowatts and terawatts respectively.
  • The effect Dead Presidents' name refers to a slang term used to describe U.S. currency, which comes from the fact that most U.S. banknotes depict deceased presidents.
    • The effect itself uses a $100 bill with Saxton Hale's face on it.
  • The effect It's a secret to everybody's name is a reference to a popular phrase in the video game series The Legend of Zelda. The appearance of the effect paired with the name seems to be a reference to the moon in The Legend of Zelda: Majora's Mask.
  • The effect Massed Flies is based on a stereotype frequently used in cartoons that something with an unpleasant or very pronounced odor will attract flies.
  • The effect Stormy 13th Hour's name is a reference to the fact that the 13th hour is commonly associated with paranormal happenings.
  • The effect Chiroptera Venenata's name is rough Latin for "poisonous bat".
  • The effect Something Burning This Way Comes's name references the fantasy horror novel by the name Something Wicked This Way Comes by Ray Bradbury; the title is itself a reference to the Shakespeare piece Macbeth, towards a specific line in Act 4, Scene 1.
  • The effect Bonzo The All-Gnawing is a small version of the tent monster seen in Carnival of Carnage.
  • The entire Death by Disco effect is a reference to the Undertale character, Papyrus.
  • The effects It's a mystery to everyone and It's a puzzle to me are references to two emotes from the Something Awful forums. The effect itself has a ghost orbiting around.
  • The effects Sulphurous and Phosphorous' names are references to the chemical elements Sulfur (or sulphur) and Phosphorus.
  • The effect Skill Gotten Gains is a play on the phrase 'ill gotten gains' meaning money obtained through illegal acts.

References

  1. Statistical analysis of TF2 unbox rate

See also