Terror Radius

		Maybe it is the will to survive that makes me even more alert to sounds. Sight is limited in this darkened part of the world. In this case their heartbeats. Not my own, but instead the Killers' as they close in on me. I just hope that they do not pick up on mine as my heart races for every thump I can hear even clearer.
		~ Benedict Baker's Journal, Nov. 1896

		Again, my senses have proven to be the keys to my survival. If my heartbeat rings in my ears, the Killer is close. If I see the "red stain" in my surroundings, the Killer is even closer!
		~ Mysterious Note

The Terror Radius is an integral Game Mechanic in Dead by Daylight.

Overview

The Terror Radius is a feature intended to induce fear and anxiety in Survivors, causing them to experience The Heartbeat, a sound effect triggered whenever Survivors enter the Killer's Terror Radius and intensifies with proximity.

Terror Radius

The Terror Radius consists of 2 components: the Heartbeat and the Terror Radius Layers.

The Heartbeat

The first component of a Killer's Terror Radius is the Heartbeat heard by Survivors whenever they are inside the Terror Radius.

Benedict Baker's Journal confirms that it is indeed a Survivor's own heart that beats audibly whenever the Killer is nearby.
This is further confirmed by a "Mysterious Note" found in the Fog and by the visibly beating heart model in the chest of Survivors.

The loudness and pace of the Heartbeat is tied directly to how close the Killer is to the Survivor in question.

Terror Radius Layers

The second component of a Killer's Terror Radius are the Terror Radius Layers.

The Terror Radius Layers are the musical component of the Terror Radius.
Each Terror Radius features 4 distinct Layers, with the possibility to add 2 additional Layers:

Layer	Proximity from Killer	Use Case	Additional Information
1	Far (1st Third)	Terror Radius	-
2	Near (2nd Third)	Terror Radius	-
3	Close (3rd Third)	Terror Radius	Replaced by Layer 4 when in Chase.
4	Chase (3rd Third)	Chase Music	Replaces Layer 3 when in Chase.
5	Chase (3rd Third)	Chase Music	Added in addition to Layer 4 when 1 Mix Tape Add-on is used.
6	Chase (3rd Third)	Chase Music	Added in addition to Layers 4 and 5 when 2 Mix Tape Add-ons are used.

Layers 1, 2, 3

Layers 1, 2, and 3 are used to signal proximity, akin to the Heartbeat.
They divide a Killer's Terror Radius into three equidistant radii, with each third of the Killer's Terror Radius playing one of the three Layers.

Layer 4

Layer 4 is reserved for when the Killer is in a Chase with a Survivor and replaces the third Layer of the Terror Radius.
Layer 4 is also referred to as the Chase Music and is what the Killer will hear when in a Chase.

Layers 5, 6

Layers 5 and 6 are reserved for additional music layers, which are added as embellishments on top of Layer 4 when the Killer is in a Chase, they do not replace other Layers.
This mechanic is currently only used for the Mix Tape Add-ons of The Legion.

Terror Radius Music

For a list of Terror Radius tracks and their instrumentation, click here.

Older Killers generally use one of 6 available generic Terror Radius Music themes, whereas newer and reworked Killers have their own, unique Terror Radius Music.

Older Killers, who have received a major rework, as well as all new Killers, have their own, unique Terror Radius Music, which makes them easily identifiable.

Chase Music

Killers do not hear their own Terror Radius music, instead they hear the general background music that plays on all Maps at all times until they enter a Chase with a Survivor.

As soon as a Killer initiates a Chase, they will hear the Chase Music, which is equal to Layer 4 of the Terror Radius.

Originally, when the Developers had first started to give Killers their unique soundtrack, it was intended that the Chase Music was a completely unique track, distinct from Layer 4 of the Terror Radius and only ever heard by the Killer.
However, for unknown reasons, after releasing two Killers with a distinct Chase Music, The Demogorgon and The Oni (see Trivia section), the Developers abandoned that practice, eventually removing the unique Chase Music from those two Killers as well.

Akin to the Terror Radius Music, older Killers use one of 3 available generic Chase Music themes, whereas newer and reworked Killers have their own, unique Chase Music.

Terror Radius Sizes

Originally, the Killers had one of two possible sizes for Terror Radius, which was determined by their default Movement speed:

• 32 metres for 115-Killers (Walking speed of 4.6 m/s)
• 24 metres for 110-Killers (Walking speed of 4.4 m/s)

However, while most Killers followed this rule, there have always been exceptions over the years and nowadays, additional parameters such as stealth, map-mobility, ranged attacks, etc. are also taken into account, leading to a variety of Terror Radii.

Non-Terror-Radii

Some Killers have Terror-Radius-like mechanics that are, however, not considered to be true Terror Radii.
This includes mainly Lullabies and Fake Terror Radii.

Lullaby

Some Killers, in addition to their Terror Radius, feature what is referred to as a Lullaby.

The term "Lullaby" originates from the literal lullaby hummed by The Huntress, who was the first Killer to feature that mechanic and thus became the name-giver of it.
This is the reason why every Killer featuring the mechanic has it referred to as a "Lullaby", even though the audio cue itself may have nothing to do with lullabies or nursery rhymes, it is simply a name for a mechanic, in order to be consistent in the game's code.

Therefore, a Lullaby refers to any Terror-Radius-like audio cue which fulfils the properties listed below, which are different from those of a regular Terror Radius.

Properties

• Lullabies are usually non-directional, though there are some exceptions:
  • The Trickster has a distance-based non-directional Lullaby, allowing Players to gauge his distance based on the volume level, but not the direction.
  • The Onryō has a directional Lullaby.
  • The Dark Lord has a variable Lullaby, working like a non-directional Lullaby at a distance and like a directional Lullaby at a closer range.
• Lullabies have a fixed, unalterable range.
  • Lullabies are not affected by Unlockables that influence the Terror Radius.
  • Lullabies are not suppressed by the Undetectable Status Effect.
    • Currently, the only way for a Killer to suppress their Lullaby is for them to hide inside a Snowman, which only spawn during the recurring Bone Chill Winter Event series.

Lullaby-Killers

• The Huntress: she hums a literal children's Lullaby; refers to the mechanic as a Lullaby.
• The Nightmare: Survivors hear a nursery rhyme when inside the Dream World; refers to the mechanic as a Lullaby.
• The Twins: Victor emits shrieks and groans when he is not with Charlotte; refers to the mechanic as Shrieks.
• The Trickster: he emits a modified version of the first layer of his Terror Radius; refers to the mechanic as a Melody.
• The Onryō: she emits a metallic screeching noise and the sound of ocean waves crashing while Demanifested and inside the Otherworld; refers to the mechanic as a Lullaby.
• The Dark Lord: he emits bat shrieks and wing flapping sounds while in Bat Form.

It should be noted that even if the game refers to a Killer's Lullaby under a different (more appropriate) name, it is still coded as a "Lullaby" in the game's code.

Fake Terror Radius

Some Killers have the ability to alter their Power in a way that produces a Fake Terror Radius, which serves to confuse a Survivor.

Properties

• Fake Terror Radii are auditorily indiscernible from a regular Terror Radius.
• Fake Terror Radii have a fixed, unalterable range.
  • Fake Terror Radii are not affected by Unlockables that influence the Terror Radius.
  • Fake Terror Radii do not interact with any Unlockables that require the presence of an actual Terror Radius to activate/charge.
    • Perks like Diversion or Stake Out will not charge their Tokens while inside a Fake Terror Radius, which can be used to distinguish it from a real one.
    • Perks like Starstruck will not trigger the Exposed Status Effect for Survivors inside a Fake Terror Radius.

Fake-TR-Killers

• The Hag: the Terror Radius emitted by a Mud Phantasm is a Fake Terror Radius.
• The Doctor: the Illusionary Terror Radii inflicted by certain Add-ons is a Fake Terror Radius.
• The Singularity: the Terror Radius inflicted by the Hyperawareness Spray Add-on is a Fake Terror Radius.
• The Unknown: the Terror Radius emitted by the Iridescent OSS Report Add-on is a Fake Terror Radius.
• The Animatronic: the Terror Radius emitted by the Faz-Coin Add-on is a Fake Terror Radius.

Visual Terror Radius

Beating Heart

Beating Heart shown inside a Locker

The Visual Terror Radius is an accessibility mechanic which can be enabled in the options menu.

When enabled, the Survivor's character model will show a literal heart beating in their chest whenever they are inside the Killer's Terror Radius.
The intensity of the beating heart corresponds to and is precisely in sync with the auditory heartbeat SFX, which is heard in addition to the Terror Radius music.

The heart VFX is visible even when the Survivor's character model is hidden, for example inside a Locker.

Off-Screen Indicator

Off-screen Indicator

When the Survivor's chest is off-screen, a HUD overlay of a heart will be shown in the centre of the screen, should the Survivor be within the Terror Radius or the Lullaby Radius, informing the Player that they might want to adjust their camera to make the Survivor's chest and heart visible again.

Lullaby Indicator

Lullaby Indicator

Should a Survivor be inside the Lullaby Radius of a Killer, a swirling red haze will be shown in their chest instead of a beating heart.
Just as auditory Lullabies are non-directional and do not allow Survivors to gauge the Killer's distance from them, the haze does not change in its intensity either.

Undetectable Mechanic

There are several Unlockables, as well as Killer Powers, that can temporarily cloak a Killer's Terror Radius, all of which apply the Undetectable Status Effect.
The list below only lists Killer Powers or Add-ons of said Power that grant Undetectable, as Perks doing so allow any Killer to become Undetectable.

• The Wraith cloaking himself and entering the Spirit World.
• The Hillbilly using Filthy Slippers
• The Nurse using "Bad Man's" Last Breath
• The Shape while remaining in Evil Within I
• The Hag using Grandma's Heart
• The Huntress using Wooden Fox
• The Pig crouching
• The Ghost Face using Night Shroud
• The Demogorgon after traversing the Upside Down
• The Deathslinger using Hellshire Iron
• The Executioner using Obsidian Goblet
• The Blight using Vigo's Journal
• The Twins using Silencing Cloth
• The Nemesis using Serotonin Injector
• The Cenobite using Chatterer's Tooth
• The Artist using Iridescent Feather
• The Onryō while Demanifested
• The Dredge during Nightfall
• The Mastermind while using Dark Sunglasses
• The Knight using Town Watch's Torch
• The Skull Merchant after deploying her Drones
• The Singularity when controlling his Biopods
• The Xenomorph when traversing its Tunnels
• The Lich using Cloak of Invisibility
• The Dark Lord in Bat Form
• The Animatronic after traversing through the Security Doors

List of Terror Radii and Lullabies

Killer	Radius	Movement Speed	Audio (Terror Radius)	Audio (Lullaby)	Audio (Old Terror Radii)
Trapper	32 metres	4.6 m/s	Themes 01-06 (Terror Radius) Themes 01-03 (Chase Music)
Wraith
Hillbilly	40 metres
Nurse	32 metres	3.85 m/s
Shape	32/16/32 metres (Evil Within I/II/III)	4.4/4.6/4.6 m/s (Evil Within I/II/III)			(Unused Version, Patch 1.2.0 QA Test Build)
Hag	24 metres	4.4 m/s
Doctor	32 metres	4.6 m/s			(PTB Version)
Huntress	20 metres (Terror Radius) 45 metres (Lullaby)	4.4 m/s	Themes 01-06 (Terror Radius) Themes 01-03 (Chase Music)
Cannibal	32 metres	4.6 m/s
Nightmare
Pig	24 metres
Clown	32 metres
Spirit	24 metres	4.4 m/s
Legion	32 metres (default) 40 metres (Feral Frenzy)	4.6 m/s
Plague	32 metres		Themes 01-06 / Themes 01-03
Ghost Face	24 metres				(Patch 5.7.0 Version)
Demogorgon	32 metres				(PTB Version 1) (PTB Version 2)
Oni					(PTB Version)
Deathslinger		4.4 m/s
Executioner	32 metres	4.6 m/s			(PTB Version)
Blight	40 metres				(Release Version)
Twins	32 metres (Charlotte) 12 metres (Victor, idle) 14 metres (Victor, attached) 18 metres (Victor, controlled)			(idle) (attached) (controlled)
Trickster	32 metres (Terror Radius) 44 metres (Lullaby)
Nemesis	32 metres
Cenobite
Artist
Onryō	24 metres (Terror Radius) 24 metres (Lullaby)
Dredge	32 metres
Mastermind	40 metres
Knight	32 metres
Skull Merchant	24 metres				(Release Version)
Singularity	32 metres				(PTB Version)
Xenomorph	32 metres (default) 24 metres (Crawler Mode)				(PTB Version)
Good Guy	32 metres	4.4 m/s
Lich		4.6 m/s
Dark Lord
Houndmaster
Animatronic	24 metres	4.4/4.6 m/s (without/with Axe)	File:TerrorRadius Animatronic.ogg

Terror Radius Themes 01-06

Theme 01
Theme 02
Theme 03
Theme 04
Theme 05
Theme 06

Chase Music Themes 01-03

Theme 01
Theme 02
Theme 03

Unlockables

Add-ons

	"Calm" - Class I	An ECT procedure using a deep wavelength that soothes various mental illnesses. With Carter's Spark as its source, this procedure can cause mild anxiety in the patient. Increases your Terror Radius by +4 metres while Static Blast is ready to be used. Reduces your Terror Radius by -4 metres while Static Blast is on cool-down. Survivors affected by Madness suffer from the Affliction of Calm: Madness II: Survivors intermittently hear a distant Illusionary Terror Radius. Madness III: Survivors constantly hear a distant Illusionary Terror Radius.
	"The Beast" - Soot	The Kunwulju symbol, representing the Realm of Fear, is finger-drawn out of soot on the body of the Bell. Your Terror Radius is no longer suppressed when Cloaked. Grants +100 % bonus Bloodpoints for Stalking and Surprise Attack Score Events.
	"The Ghost" - Soot	The Khugwemuu symbol, representing the Spirit World, is finger-drawn out of soot on the body of the Bell. Your Terror Radius and Red Stain are suppressed for another 6 seconds after uncloaking.
	Soured Milk	A metal bottle filled with milk that has since soured. Loud as Victor could be, he quieted down when presented with his meal. Increases the Shriek radius of Victor by +2 metres.
	Strobing Light	With the right training, it can be used to make people more suggestible. Reduces your Terror Radius by -8 metres, when Hidey-Ho Mode is on cool-down.
	"Calm" - Class II	A risky ECT procedure using a deep wavelength that soothes various mental illnesses. With Carter's Spark as its source, this procedure can cause moderate anxiety in the patient. Increases your Terror Radius by +6 metres while Static Blast is ready to be used. Reduces your Terror Radius by -6 metres while Static Blast is on cool-down. Survivors affected by Madness suffer from the Affliction of Calm: Madness II: Survivors intermittently hear a distant Illusionary Terror Radius. Madness III: Survivors constantly hear a distant Illusionary Terror Radius.
	"Discipline" - Class II	Project Awakening ECT procedure for disciplinary action which uses a fixed dose at high voltage. Can cause a state of moderate paranoia in the patient. Reduces the Detonation delay of the Shock Therapy Attack by -0.1 seconds. Survivors affected by Madness suffer from the Affliction of Discipline: Madness II: During a Chase, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. This effect lingers for 6 seconds after the Chase ends. Madness III: In any situation, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. You share into your patients' Madness and can see the Illusionary Red Stain. "We re-educate our patients with the greatest care." — Léry's Memorial Institute
	Adaptive Lighting	The Drone takes account of the surrounding area and casts lights in a bewildering manner that obscures movement. Increases the duration of the Undetectable Status Effect by +20 %.
	Cat's Eye	An eyeball that belonged to a cat eaten by the starving Deshayes family. Victor hid it from his mother, using it as a toy. Suppresses all noise made by Victor while holding a Pounce.
	Dead Rabbit	A grey rabbit which has been opened from neck to tail. Adjusts the Terror Radius, depending on the current Tier of Evil Within: Tier II: Reduces it by -25 %. Tier III: Increases it by +25 %.
	Madeleine's Glove	A glove once owned by The Twins' mother. During desperate times, it was held over Victor's mouth to keep him from making a peep. Increases the Shriek radius of Victor by +4 metres.
	Marshal's Badge	A silver badge taken from the corpse of a lawman in Arizona Territory who interfered with the Hellshire Gang's bounties. Reduces your Terror Radius by -4 metres during Aim Down Sights. "Get your prayers in, you'll be swinging by noon." — Caleb Quinn
	Moonstone Necklace	A simple necklace by day, but its power comes to life in the dark. Reduces the Terror Radius in Vampire and Wolf Form by -4 metres.
	Security Guard's Badge	The badge comes with certain privileges for whoever carries it. Upon exiting a Security Door after teleporting to it, the following effect applies: Extends the duration of the Undetectable Status Effect by +25 % to 25 seconds.
	Ultrasonic Sensor	A limitation of organic hearing is a limited aural spectrum. Expanding that range is like gaining an entirely new sense. Exiting a Biopod within 2 seconds of afflicting a Survivor with Temporal Slipstream reduces your Terror Radius by -12 metres for 12 seconds.
	"Discipline" - Class III	Project Awakening ECT procedure for disciplinary action which uses a fixed dose at very high voltage. Can cause a state of serious paranoia in the patient. Reduces the Detonation delay of the Shock Therapy Attack by -0.15 seconds. Survivors affected by Madness suffer from the Affliction of Discipline: Madness II: During a Chase, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. This effect lingers for 6 seconds after the Chase ends. Madness III: In any situation, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. You share into your patients' Madness and can see the Illusionary Red Stain. "Respect of our patients is at the core of our principles." — Léry's Memorial Institute
	Aogiri Tree Robe	Garments worn by an anti-human ghoul organisation. Whenever a Generator is completed while in Enraged Mode, you benefit from the following effect: Grants the Undetectable Status Effect for 20 seconds.
	Bonnie's Guitar Strings	Worn strings that are off-tune and liable to snap. Unlocks potential in your Aura-reading ability while moving between Security Doors: The intensity of the Generator Auras reveals their current Repair progress. Upon exiting a Security Door after teleporting to it, the following effect applies: Reduces the duration of the Undetectable Status Effect by -100 % to 0 seconds. This causes the Status Effect to be removed instantly.
	Cloak of Elvenkind	"Its colours are constantly shifting, making you more difficult to detect from afar." While casting the Fly Spell, you benefit from the following effect: Reduces your Terror Radius by -22 metres. This effect lingers for 6 seconds after ending Fly.
	Hyperawareness Spray	Used by crew members during long shifts to avoid lapses in focus. Side effects of overuse include paranoia and, in extreme cases, hallucination. Causes all Slipstreamed Survivors to hear a fake nearby Terror Radius.
	Incensed Ointment	A dark waxy paste, laced with cedar sap that diffuses a sweet and earthy aroma. Applied directly on infected skin. Ingesting Corruption causes all Survivors in your Terror Radius to scream and reveal their locations to you.
	Joey's Mix Tape	A mix of bangin' tracks and slammin' beats for chillaxin' when life's a bitch. Survivors suffer from the Haemorrhage Status Effect until fully healed after mending themselves. Unlocks an additional sound layer in the Terror Radius, enhancing it musically. Joey's Mix Tape can be combined with any other Mix Tape Add-on to unlock multiple sound layer combos.
	Knife Belt Clip	A perfect belt clip to scout carry your blade discreetly. No one knows what you are planning to do tonight. Reduces your Terror Radius by -12 metres when Crouched.
	Serotonin Injector	A hormone that slightly relaxes the user for when stealth is required. Grants the Undetectable Status Effect for 15 seconds, after a Zombie is disintegrated by any means.
	Shop Lubricant	An oil specifically formulated for Chainsaws. A special additive prevents oil throw off. The Auras of Survivors downed by Bubba's Chainsaw, if no other Survivors were within the Terror Radius, are hidden to other Survivors for 20 seconds.
	Silk Pillow	For when you want to smother your target with silky-smooth softness. Permanently reduces your Terror Radius by -6 metres. Increases the Charge time of Slice & Dice to 150 % of its default duration.
	Susie's Mix Tape	A fast and thrilling mix tape with energising songs with break-neck beats. Increases the Detection radius of Killer Instinct by +20 metres. Unlocks an additional sound layer in the Terror Radius, enhancing it musically. Susie's Mix Tape can be combined with any other Mix Tape Add-on to unlock multiple sound layer combos.
	Town Watch's Torch	Upon breaching a village, the first thing they would extinguish was the torches, and with them, hope. Grants the Undetectable Status Effect during a Hunt.
	Violet Waxcap	A dark fleshed mushroom from the Upside Down that allows The Demogorgon to telepathically distort the senses in its prey. After traversing the Upside Down, the following effect applies: Extends the Undetectable Status Effect gained after emerging from a Portal by +1 second to 6 seconds.
	Well Water	Water from the well where Sadako was left to die. Murky and black, it obscures everything around it. Increases the duration of the Undetectable Status Effect by +2 seconds after Manifesting by any means.
	"Bad Man's" Last Breath	A powerful last breath snatched from the asylum patient known as the "Bad Man". In the hands of The Nurse, it jolts with intensity. Hitting Survivors with a Special Attack grants the Undetectable Status Effect for 25 seconds. "Bad Man's" Last Breath" has a cool-down of 45 seconds.
	"Calm" - Carter's Notes	An experimental version of the ECT procedure annotated by Doctor Herman Carter himself. Uses a deep wavelength that soothes various mental illnesses. With Carter's Spark as its source, this procedure causes uncontrollable fear and anxiety in the patient. Increases your Terror Radius by +8 metres while Static Blast is ready to be used. Reduces your Terror Radius by -8 metres while Static Blast is on cool-down. Survivors affected by Madness suffer from the Affliction of Calm: Madness II: Survivors intermittently hear a distant Illusionary Terror Radius. Madness III: Survivors constantly hear a distant Illusionary Terror Radius. "Higher quality seizures trigger catatonia. At least it gives me peace for the time it lasts." — Herman Carter
	"Discipline" - Carter's Notes	Project Awakening ECT procedure for disciplinary action, annotated by Doctor Herman Carter himself. The intolerably high voltage leaves the patient in a severe state of paranoia. Reduces the Detonation delay of the Shock Therapy Attack by -0.2 seconds. Survivors affected by Madness suffer from the Affliction of Discipline: Madness II: During a Chase, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. This effect lingers for 6 seconds after the Chase ends. Madness III: In any situation, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. You share into your patients' Madness and can see the Illusionary Red Stain. "To avoid relapse from our most tenacious subjects, use maximum levels when proceeding with disciplinary actions." — Herman Carter
	Apex Muffler	A masterfully crafted chainsaw muffler that outperforms all others. Silences the Chainsaw for all Survivors outside of the Terror Radius.
	Cat Carrier	Saving the cat is a noble goal. It's also very distracting. Whenever a Remote Flame Turret knocks you out of Crawler Mode, you benefit from the following effect: Grants the Undetectable Status Effect for 30 seconds.
	Chatterer's Tooth	A fragment from a Cenobite whose mouth chatters endlessly. This tooth, having broken from his jaw, is finally silent. Grants the ability to see the Aura of the Lament Configuration. Picking up the Lament Configuration deactivates an on-going Chain Hunt and grants the Undetectable Status Effect for 25 seconds.
	Dark Sunglasses	Glasses enhanced with AR that grant the wearer an invaluable advantage on the battlefield. Grants the Undetectable Status Effect for 20 seconds whenever a Survivors reaches Critical Infection.
	Drop of Perfume	One of the few luxuries Madeleine escaped her past life with. It has a pleasant, disarming scent. Survivors suffer from the Oblivious Status Effect within Victor's Shriek range when controlling Charlotte. "Beware the deceit of witches, for they exploit the goodness in men's hearts." — A History of Witches and Demons, 1602
	Filthy Slippers	Max sometimes struggled to hear his mother's footfalls. Gain the Undetectable Status Effect until you stop sprinting after maintaining a Chainsaw Sprint for at least 2 seconds.
	Frank's Mix Tape	Never go on a kill mission without your tunes. A track list of massive distortions and loud percussion that stabs at your eardrums. During Feral Frenzy, you benefit from the following effects: Pauses the Power Gauge depletion while performing the Break or Damage action. Increases the Action speed for damaging Generators by +20 %. Increases the Action speed for breaking Breakable Walls by +30 %. Unlocks an additional sound layer in the Terror Radius, enhancing it musically. Frank's Mix Tape can be combined with any other Mix Tape Add-on to unlock multiple sound layer combos.
	Gold Creek Whiskey	Warm comfort in a bottle that quelled Caleb's anger and slowed his step. Reduces your Terror Radius by -8 metres during Aim Down Sights. "A smooth taste for the rugged frontier." — Gold Creek Advertisement, 1876
	Grandma's Heart	The cold heart of the cannibal village elder. The trapped life essence within unlocks tremendous potential in The Hag's power. Whenever Survivors trigger Phantasm Traps, you benefit from the following effects for their tripped duration: Suppresses your Terror Radius. Increases the Fake Terror Radius of the Mud Phantasms by +16 metres. "Bring me another slice of the girl." — Grandma
	Pile of Nails	It is a lot easier to stay hidden when your target is worried about a pile of nails flying at their head. Grants the Undetectable Status Effect for 3 seconds after manually ending Hidey-Ho Mode.
	Prayer Beads Bracelet	THIS ADD-ON WAS DECOMMISSIONED (This Unlockable was decommissioned in the past and no longer exists in the current Game.) A powerful bracelet that reads a sacred mantra. Causes all Survivors outside of your Terror Radius to hear the audio cue of the Phase-Walk.
	Ship Figurehead	A trophy torn from the bow of another ship. The Terror Radius of The Houndmaster changes based on the proximity of The Dog: Increases the Terror Radius by +8 metres while it is following. Reduces the Terror Radius by -8 metres while it is away.
	Vermilion Webcap	A bright red poisonous mushroom from the Upside Down. After traversing the Upside Down, the following effect applies: Extends the Undetectable Status Effect gained after emerging from a Portal by +3 seconds to 8 seconds. "Still experimenting with this specimen, so far our results are inconsistent." — Hawkins National Laboratory
	Vigo's Journal	The journal of a man who claimed to have returned from The Void. The knowledge within has practical applications. Grants the Undetectable Status Effect during a Rush. "In a wasteland of forgotten dreams and endless routine, the man with a way out is God." — Talbot Grimes
	Wooden Fox	Roughly carved, this fox statuette is no more than a few inches. A reminder that stealth and cunning is as effective as raw power. Grants the Undetectable Status Effect after reloading at Lockers for 30 seconds.
	Faz-Coin	Collecting these tokens comes with a price. Upon throwing the Fire Axe, the following effects are applied: Causes the Fire Axe to emit a copy of your Terror Radius until it is retrieved. This Terror Radius is set to 24 metres. Grants the Undetectable Status Effect for 10 seconds.
	Fuming Mix Tape	Dark beats, violent shreds and unfathomable vocals from another world fill the mind with a vibrating sixth sense. During Feral Frenzy, the intensity of the Generator Auras reveals their current Repair progress. Causes all partially repaired Generators to start regressing. Unlocks an additional sound layer in the Terror Radius, enhancing it musically. The Fuming Mix Tape can be combined with any other Mix Tape Add-on to unlock multiple sound layer combos.
	Hellshire Iron	The Hellshire Gang's branding iron. Despite folklore, it never made its mark on new initiates, instead having been used to brand particularly quarrelsome bounties. Grants the Undetectable Status Effect while a Survivor is speared by The Redeemer. This effect lingers for 10 seconds. "Hellshire Gang: Justice Seekers or Outlaws?" — Glenvale Gazette headline
	Iridescent Feather	A glass-like feather moulded from The Fog itself. Simple as it may be, it is a symbol of those who watch over Carmina. Grants the Undetectable Status Effect when Birds of Torment is on Cool-down and you hold no Dire Crows. Reduces the number of summonable Dire Crows by -1. "They saved me when I could not save myself." — Carmina Mora
	Iridescent King	A glass-like king chess piece moulded from The Fog itself. The Entity's trace reverberating within can break the most powerful minds. Survivors affected by Madness suffer simultaneously from the Afflictions of Calm, Discipline, Order, and Restraint: Survivors intermittently hear a distant Illusionary Terror Radius. During a Chase, Survivors perceive an Illusionary Red Stain and Terror Radius, as if you were constantly right behind them. Madness II: This effect lingers for 6 seconds after the Chase ends. Madness III: This effect is constant, regardless of whether the Survivors are being chased or not. Broken Pallets are randomly replaced by dropped or upright Illusionary Pallets, which persist until approached by Survivors. New Illusionary Pallets are generated every 20 seconds. Increases the duration of Illusionary Doctors by +6 seconds. You share into your patients' Madness and can see the Illusionary Doctors, Red Stain, and Pallets. "Gazing into the iridescent glass is plunging one's self into madness." — Herman Carter
	Iridescent OSS Report	The report was redacted to the point of being meaningless. But still, theorists tried to extract meaning from it. Reduces the Cool-down duration of the Teleport ability by -5 seconds. Increases the lifetime of the Decoy by +10 seconds. Imbues Decoys with a Terror Radius and a Red Stain.
	Iridescent Unpublished Manuscript	"Before he disappeared, Adriana's father had started a newer, darker manga: Sonhadores Sombrios." Whenever any Drone enters its Disabled State, you benefit from the following effects: Grants the Undetectable Status Effect for 15 seconds. The disabled Drone emits a Terror Radius of 32 metres for 15 seconds. "When evil is on the loose, it cannot escape from Adi Valente!" — Quote on the cover of Adi Valente #1
	Iridescent Wheel Handle	Once used to guide a greast vessel across the open seas, its remnants now serve as a memory of times past. Increases the Linger duration of The Dog at the Target Location of the Search Command by +20 %. Grants the Undetectable Status Effect while The Dog fulfils the Search Command. Touching the Search Path as The Houndmaster immediately removes the Status Effect. "I fear no obstacle, be it man or storm." — Portia Maye
	Obsidian Goblet	An ancient looking goblet carved from pure obsidian. Grants the Undetectable Status Effect while standing on Torment Trails in the environment. "Forgive me for waking you. But without you, I just can't go on." — James Sunderland
	Red Moss	A psychedelic moss that grows on tree barks in the Upside Down. After traversing the Upside Down, the following effects apply: Extends the Undetectable Status Effect gained after emerging from a Portal by +8 seconds to 13 seconds. Suppresses all noises related to emerging from a Portal. Increases the time required to emerge from a Portal by +15 %. "Consuming its leaf enhances athletic performance and causes euphoria." — Hawkins National Laboratory
	Silencing Cloth	A coarse strip of cloth that a five-year-old Charlotte would put in her mouth. Stopped her from screaming when witch hunters were nearby. After waking from her Dormant State, Charlotte is granted the Undetectable Status Effect for 20 seconds. "I don't like this game anymore, Mother..." — Charlotte Deshayes

Perks

	Agitation	"You get excited in anticipation of hooking your prey." While carrying a Survivor, Agitation activates: Increases your Carrying speed by 6/12/18 %. Increases your Terror Radius by +12 metres. "At some point, the excitement of hooking one of us becomes more important than the desire to kill us."
	Beast of Prey	Your lust for a kill is so intense that your connection with The Entity is momentarily lost, making you totally unpredictable. Grants the Undetectable Status Effect for 30/35/40 seconds upon triggering the Bloodlust Status Effect. "Where did she go?"
	Coulrophobia	Even those without a fear of clowns know to be terrified of you. For all Survivors within your Terror Radius, the following effects apply: Reduces their Healing speed by 30/40/50 %. Increases the Rotation speed of Healing Skill Checks by +50 %.
	Dark Devotion	"The display of your Powers creates a whirlwind of panic that spreads throughout the land." Whenever the Obsession becomes injured by any means, Dark Devotion activates for 35/40/50 seconds: Transfers your Terror Radius to the Obsession. This Terror Radius is set to 40 metres. Grants the Undetectable Status Effect. You can only be obsessed with one Survivor at a time. "And terror shall take hold of a defiant non-believer, who shall falsely announce my arrival." — (The Tablet of Adiris, 48.9)
	Dissolution	Everything turns to dust. It is as inescapable as the coming of the night. After 3 seconds of injuring a Survivor by any means, Dissolution activates for 12/16/20 seconds: Instantly breaks the next Pallet that Survivor performs a Fast Vault across while inside your Terror Radius. "The Garden shall be a place of perfect Joy; through Joy, nothing shall stand in our way." — Otto Stamper
	Distressing	"Your horrifying emanation strikes at a supernaturally long distance." You benefit from the following permanent effect: Increases your Terror Radius by 20/25/30 %.
	Diversion	After staying in the Terror Radius without being chased for 30/25/20 seconds, Diversion activates. While active, press the Active Ability button while crouched and motionless to throw a pebble in the direction you are facing: Creates a distraction for the Killer at its landing location 20 metres away: Triggers a Loud Noise Notification. Creates fake Scratch Marks. Diversion deactivates after use. "There's what is easy and then there's what is right. If you confuse the two, there's no telling what you become." — Adam Francis
	Furtive Chase	"You lurk in the shadows, eliminating your victims one by one." After hooking the Obsession, Furtive Chase triggers its primary effects for 14/16/18 seconds: Grants the Undetectable Status Effect. Grants a +10 % Haste Status Effect. After the Obsession is rescued from the Hook, Furtive Chase triggers its secondary effect: Causes the Obsession status to transfer to the Rescuer. You can only be obsessed with one Survivor at a time. "You have no idea what I have planned for you. It'll be in the news for weeks. I'll make sure of that." — The Ghost Face
	Hex: Face the Darkness	You make an example of one of your victims, forcing their allies to become awed by your power. Whenever you injure a Survivor by any means, if there is still a Dull Totem remaining on the Map, Hex: Face the Darkness activates and lights it, cursing that Survivor: Causes all other Survivors to scream every 35/30/25 seconds, if they are outside of the Terror Radius, revealing their Auras for 2 seconds each time. Hex: Face the Darkness deactivates once the Cursed Survivor either enters the Dying State or is fully healed, which extinguishes the Totem. Hex: Face the Darkness is disabled for the remainder of the Trial, if a Survivor manages to cleanse its Hex Totem. "I shall make an example of one. These mewling worms will never know peace." — Tarhos Kovács
	Infectious Fright	"The cries of the unfaithful make your heart leap." Whenever a Survivor is put into the Dying State by any means, all other Survivors within your Terror Radius will scream and reveal their current location to you for 4/5/6 seconds. "Horror overcomes the heart of infidels who cry at the feet of the fallen." — (Hymn of Praise, 11.4)
	Insidious	This description is based on the changes announced for or featured in the upcoming Patch 9.1.0 Unlocks the stealth ability: After standing still for 3/2/1 second(s), Insidious activates for as long as you remain stationary: Grants the Undetectable Status Effect. Insidious deactivates once you start moving again.
	Invocation: Treacherous Crows	"One with arcane knowledge has no reason to fear those watchful birds." When in the Basement near the circle, press the Active Ability button to begin the Invocation, which takes 60 seconds to complete. During an Invocation, your Aura is revealed to all other Survivors and they can join in, accelerating the process by +100 %, if they too have an Invocation Perk equipped, or by +50 %, if they have not. Once the Invocation is completed, the following effects apply: Whenever the Killer scares a Crow while a Survivor is inside their Terror Radius, their Aura is revealed to all Survivors for 1/1.5/2 seconds. You automatically enter the Injured State from any previous Health State, and suffer from the Broken Status Effect for the remainder of the Trial. "Remember your training. They taught you all about the crows." — Taurie Cain
	Last Stand	This description is based on the changes announced for or featured in the upcoming Patch 9.1.0 "Even when things are at their worst, your spirit is indomitable." After staying in the Terror Radius without being chased for 80/70/60 seconds, Last Stand activates. While active, perform a Rushed Vault action to trigger its effect: Stuns the Killer for 3 seconds, if they are within 2.5 metres of that Vault location. Last Stand is disabled for the remainder of the Trial after use. "Some bullies, you can live with. Others, you gotta fight." — Michonne Grimes
	Machine Learning	"Free from your shackles, you are born anew and prepared to eliminate your creators." After performing the Damage Generator action, Machine Learning activates: Causes that Generator to become a Compromised Generator. Damaging another Generator transfers the state to it instead. The Aura of the Compromised Generator is highlighted to you in yellow until it is completed. Once the Compromised Generator is completed, you benefit from the following effects for 35/40/45 seconds: Undetectable Status Effect +8 % Haste Status Effect Machine Learning deactivates after use. "YOU WILL HOLD NO DOMINION OVER ME!" — HUX-A7-13
	Monitor & Abuse	Meticulous in your approach, terrifying in your application. Increases the default value of your Terror Radius by 6/7/8 metres for the entire Trial. Whenever you are not in a Chase with a Survivor, the following effect applies: Reduces your Terror Radius by 12/14/16 metres. "It's time for your treatment!" — Herman Carter, The Doctor
	Overwhelming Presence	Just knowing you are near is enough to disturb your victims. Survivors within your Terror Radius suffer from inefficiency: When using an Item, its Depletion rate is increased by 80/90/100 %. "Shit!! I dropped the gauze!"
	Phantom Fear	"You have always had a reputation for startling unsuspecting guests." Whenever a Survivor within your Terror Radius looks at you, they suffer from the following effects: Causes them to scream and reveal their Aura to you for 2 seconds. Phantom Fear has a cool-down of 80/70/60 seconds. "Excellent. Your screams please me." — Springtrap
	Scene Partner	You lock in with your co-star, engaging with and reacting to each other on a higher level. Whenever you are inside the Terror Radius, Scene Partner activates: Looking at the Killer causes you to scream, which reveals their Aura for 4/5/6 seconds. There is a chance of 50 % that you will scream again, extending the Aura-reveal duration by another +2 seconds. Scene Partner has a cool-down of 40 seconds. "This is not in the script!" — Nicolas Cage
	Septic Touch	The Land of the Shadows subsumes all. Healing only delays the inevitable. Whenever a Survivor performs a Healing action while they are inside your Terror Radius, that Survivor suffers from the Blindness and Exhausted Status Effects These effects linger for 6/8/10 seconds after the Healing action is interrupted by any means. "Do not admit to fear, or pain, or doubt. These are the seeds from which darkness grows." — Otto Stamper
	Stake Out	"Getting close to the Killer fills you with determination." Staying in the Terror Radius without being chased grants +1 Token every 15 seconds, up to a maximum of 2/3/4 Tokens. While performing a skilful interaction that can trigger Skill Checks, you benefit from the following effects: Converts any Good Skill Check into a Great Skill Check. This consumes -1 Token. Increases the Progression bonus of those Great Skill Checks by +1 %. Stake Out does not apply to regular Great Skill Checks nor do they consume any Tokens. "I had you, I had you on your knees. You're runnin' scared because we had you. We're gonna close this case!" — Detective David Tapp
	Starstruck	Your unmatched showmanship dazzles all. When carrying a Survivor, Starstruck activates: Survivors suffer from the Exposed Status Effect while in your Terror Radius. The Status Effect lingers for 26/28/30 seconds after leaving your Terror Radius. After hooking or dropping the carried Survivor, Starstruck deactivates: The Status Effect persists for 26/28/30 seconds for any Survivor inside your Terror Radius at that moment. Starstruck has a cool-down of 60 seconds once the Survivor is no longer being carried. "Enjoy this moment, few get so close." — Ji-Woon Hak
	Tinkerer	Whenever a Generator is repaired to 70 %, you benefit from the following effects: Triggers a Loud Noise Notification for that Generator, revealing its location. Grants the Undetectable Status Effect for the next 12/14/16 seconds. Tinkerer can only trigger once per Generator per Trial. "The Hillbilly makes impressive tools out of scraps. Tools aimed at maiming us in creative ways." — Notebook
	Trail of Torment	You guide your victims along a path of pain and punishment. Performing the Damage Generator action on a Generator activates Trail of Torment: Grants the Undetectable Status Effect until the Generator stops regressing. The Aura of the damaged Generator is revealed to all Survivors in yellow. Trail of Torment has a cool-down of 60/45/30 seconds.
	Unforeseen	"Terror takes many forms and whispers devastating lies in its victims' ears." After performing the Damage Generator action on a Generator, you benefit from the following effects for 22/26/30 seconds: Transfers your Terror Radius to the damaged Generator. This Terror Radius is set to 32 metres. Grants the Undetectable Status Effect. Unforeseen has a cool-down of 30 seconds. "Mom, if you find this, I'm sorry..." — Final Journal Entry, 07/12/1991
	Unnerving Presence	"Your presence alone instils great fear." While inside your Terror Radius, Survivors performing Repairing or Healing actions suffer from the following effects: Increases the chances of triggering a Skill Check by +10 %. Reduces the Success zone of those Skill Checks by 40/50/60 %. "Its presence befalls us."

Calculations

The following table lists several examples of resulting Terror Radii when using Unlockables that affect it in some way.
It should be noted that not all 4.6 m/s or 4.4 m/s share the same respective Terror Radius, this table acts solely as a generic example:

Unlockable	Modifier	Standard 4.6 m/s Killer	Standard 4.4 m/s Killer
no Unlockables	-	32 metres	24 metres
Agitation	+12 m (Carrying)	44 metres	36 metres
Distressing	+20 %	38.40 metres	28.80 metres
	+25 %	40.00 metres	30.00 metres
	+30 %	41.60 metres	31.20 metres
Monitor & Abuse*	-16 m (no Chase)	24 metres	16 metres
	default (in Chase)	40 metres	32 metres

Change Log

Patch 1.8.1

• Killer Nerf: increased The Nightmare's Terror Radius to 24 metres from formerly 16 metres.

Patch 1.9.3

• Killer Buff: reduced The Hag's Terror Radius to 24 metres from formerly 28 metres.

Patch 2.5.0

• Killer Nerf: increased The Pig's Terror Radius to 32 metres from formerly 28 metres.

Patch 2.6.0

• Quality of Life: the intensity of the Terror Radius is now also scaled based on the vertical distance, in addition to the horizontal distance.

Patch 2.7.0

• Killer Nerf: increased The Legion's Terror Radius to 32 metres from formerly 24 metres.

Patch 3.5.0

• Change: provided The Doctor with a unique Terror Radius and Chase Music.

Patch 4.1.0

• Change: provided The Hillbilly with a unique Terror Radius and Chase Music.

Patch 4.4.0

• Change: The Blight now features a change to his Terror Radius Music. This change makes his nearby layer more distinct than the approaching layer as previously, the transitions between the two layers are too subtle.

Patch 4.5.0

• Change: provided The Clown with a unique Terror Radius and Chase Music.

Patch 5.3.0

• Change: provided The Spirit with a unique Terror Radius and Chase Music.
• Killer Nerf: increased The Deathslinger's Terror Radius to 32 metres from formerly 24 metres.

Patch 5.7.0

• Change: provided The Legion and The Ghost Face with a unique Terror Radius and Chase Music.

Patch 5.7.1

• Change: reduced the volume of The Ghost Face's Terror Radius and Chase Music due to Community complaints.

Patch 5.7.2

• Change: replaced The Ghost Face's Terror Radius and Chase Music with a completely new theme to address the previously mentioned complaints.
  • The change only replaced Layers 3 and 4, which represent closest proximity and the Chase.

Patch 6.1.0

• Change: replaced The Ghost Face's Terror Radius and Chase Music again.
  • The change only replaced Layers 3 and 4, which represent closest proximity and the Chase.

Patch 6.3.0

• Change: provided The Hag with a unique Terror Radius and Chase Music.

Patch 6.5.0

• Change: provided The Nurse with a unique Terror Radius and Chase Music.

Patch 6.7.0

• Quality of Life: implemented an option to enable a visual representation of the Terror Radius.

Patch 7.3.0

• Change: replaced The Skull Merchant's Chase Music with a different theme to address the Community complaints.
  • The change only replaced Layer 4, which represents the Chase.

Patch 7.4.0

• Change: increased The Trickster's Terror Radius to 32 metres from formerly 24 metres.
  • This change is not listed as a nerf, because The Trickster also received an increase to his default Movement speed from 4.4 m/s to 4.6 m/s alongside it, warranting the increased Terror Radius.

Patch 8.1.0

• Undocumented Reversal: reverted The Lich's Layer 3 Terror Radius to be the same as it was in the PTB.

Patch 8.6.0

• Killer Buff: reduced the Terror Radii of The Pig, The Ghost Face, and The Skull Merchant from 32 metres to 24 metres.
• Killer Nerf: increased the Terror Radii of The Hillbilly and The Blight from 32 metres to 40 metres.

Trivia

• Unlockables that affect the Terror Radius by a percentage tend to apply that on top of the base Terror Radius, ignoring other Unlockables that affect it by a concrete numerical value.
• Survivors who are hooked do not hear the Terror Radius.

Old Terror Radii

• Originally, both The Demogorgon and The Oni had a unique Chase Music from the Killer's POV. Survivors would still hear the Killer's normal Terror Radii near the Killer and in Chase. These themes were removed a while later in an unspecified patch, and replaced by their default chase themes.
  • The Oni's unique Chase Music was his PTB Chase Music while the Demogorgon's Chase Music was its current nearby layer.