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.

The Terror Radius

A Killer's Terror Radius is generally set to 32 metres for those moving at 4.6 m/s or at 24 metres for those moving at 4.4 m/s.
However, there are some Killers that do not follow this general rule and have a different Terror Radius and sometimes multiple Terror Radii (see Table below).

Status Effect

There are several Unlockables that can temporarily cloak a Killer's Terror Radius, all of which apply the Undetectable Status Effect.

Powers

Some Killer Powers will temporarily cloak their Terror Radius upon use:

• The Wraith cloaking himself and entering the Spirit World.
• The Shape while remaining in Evil Within I.
• The Hag using the Grandma's Heart .
• The Pig crouching.
• The Ghost Face using Night Shroud.
• The Demogorgon after traversing the Upside Down.

The Heartbeat

The Terror Radius causes a Survivor's very own heart to beat audibly.
The Heartbeat sound effect will get louder and quicker the closer in proximity the Survivor is to the Killer.
That it is indeed their own Heartbeat and not the Killer's, as Benedict's journal entry would imply, is confirmed by a Mysterious Note found in The Fog and by the actually visible, beating heart Dead by Daylight Mobile introduced into the Survivor model as a replacement for the audible Heartbeat in cases of Players playing without sound.

The Terror Radius Music

The Terror Radius Music plays for Survivors whenever they are inside the Killer's Terror Radius.
The music gets progressively louder and more aggressive the closer in proximity the Killer is to them, but outside of a Chase.

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.

The Terror Radius Music has 4 layers to it; whenever the distance between a Killer and a Survivor undercuts the next quadrant of the maximum Terror Radius distance, the music seamlessly transitions to the next layer, which can be used to accurately gauge a Killer's proximity, based on the knowledge of a Killer's default Terror Radius range, given that the Killer does not use any Terror-Radius-altering Unlockables.

The Chase Music

Killers do not hear their own Terror Radius music, instead they hear the general background music that plays on all Maps.
It is only when a Survivor initiates a Chase that the background music will be replaced by the Chase Music.
The Chase Music is similar to the Terror Radius Music, but without the aforementioned layering based on distance.
In a Chase, it will be heard only by the Killer, while the Survivors hears the regular Terror Radius Music.

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.

List of Terror Radii

Killer	Type	Radius	Affected by Unlockables*	Terror Radius Music	Chase Music
Trapper	-	32 metres	Yes	Themes 01-06	Themes 01-03
Wraith	Cloaked	0 metres	No
	Uncloaked	32 metres	Yes
Hillbilly	-	32 metres	Yes
Nurse	-	32 metres	Yes	Themes 01-06	Themes 01-03
Shape	Evil Within I	0 metres	No
	Evil Within II	16 metres	Yes
	Evil Within III	32 metres	Yes
Hag	-	24 metres	Yes	Themes 01-06	Themes 01-03
Doctor	-	32 metres	Yes
Huntress	-	20 metres	Yes	Themes 01-06	Themes 01-03
	Lullaby, Humming	45 metres	No		n/a
Cannibal	-	32 metres	Yes	Themes 01-06	Themes 01-03
Nightmare	Lullaby, Dream World	32 metres	No	Lullaby	n/a
	Overworld	32 metres	Yes	Themes 01-06	Themes 01-03
Pig	-	32 metres	Yes
Clown	-	32 metres	Yes
Spirit	-	24 metres	Yes	Themes 01-06	Themes 01-03
Legion	Default	32 metres	Yes
	Feral Frenzy	40 metres	Yes
Plague	-	32 metres	Yes
Ghost Face	Default	32 metres	Yes
	Night Shroud	0 metres	No
Demogorgon	-	32 metres	Yes
Oni	-	32 metres	Yes
Deathslinger	-	24 metres	Yes
Executioner	-	32 metres	Yes
Blight	-	32 metres	Yes
Twins	Charlotte	32 metres	Yes
	Victor, idle	12 metres	No
	Victor, attached	14 metres	No
	Victor, controlled	18 metres	No
Trickster	-	24 metres	Yes		File:ChaseMusic Comet.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

	Grandma's Heart	The cold heart of the cannibal village elder. The trapped life essence within unlocks tremendous potential in The Hag's power. Decreases The Hag's Terror Radius to 0 metres when a Survivor triggers a Phantasm Trap. Increases a Mud Phantasm's Terror Radius to 16 metres for the tripped Phantasm Trap duration. "Bring me another slice of the girl." — Grandma	Blackened Catalyst
	"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. Slightly increases Terror Radius while Static Blast is ready. Slightly decreases Terror Radius while Static Blast is on cool-down. Survivors with Madness suffer from the Affliction of Calm: Madness II: Intermittently causes Survivors to hear a distant Illusionary Terror Radius. Madness III: Constantly causes Survivors to hear a distant Illusionary Terror Radius.	Carter's Spark
	"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. Moderately increases Terror Radius while Static Blast is ready. Moderately decreases Terror Radius while Static Blast is on cool-down. Survivors with Madness suffer from the Affliction of Calm: Madness II: Intermittently causes Survivors to hear a distant Illusionary Terror Radius. Madness III: Constantly causes Survivors to hear a distant Illusionary Terror Radius. "Electro-convulsive therapy is one of the safest medical procedures." — Léry's Memorial Institute
	"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. Considerably increases Terror Radius while Static Blast is ready. Considerably decreases Terror Radius while Static Blast is on cool-down. Survivors with Madness suffer from the Affliction of Calm: Madness II: Intermittently causes Survivors to hear a distant Illusionary Terror Radius. Madness III: Constantly causes Survivors to hear a distant Illusionary Terror Radius. "Higher quality seizures trigger catatonia. At least it gives me peace for the time it lasts." — Herman Carter
	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 with Madness suffer from the following Afflictions: Calm, Discipline, Order, and Restraint. Intermittently causes Survivors to hear a distant Illusionary Terror Radius. While in a Chase, Survivors perceive an Illusionary Red Stain and Terror Radius as though The Doctor were directly behind them. This effect persists for 6 seconds after the Chase ends in Madness II and is constantly active in Madness III. Broken Pallets may appear to be replaced with Illusionary Pallets that persist until approached. A new Illusionary Pallet is generated at the location of a random Broken Pallet every 20 seconds. Moderately increases Illusionary Doctor duration. The Doctor shares in his patients' Madness in order to see the Illusionary Red Stain as well as the Auras of Illusionary Doctors and Illusionary Pallets. "Gazing in the iridescent glass is plunging oneself into madness."
	Dead Rabbit	A grey rabbit which has been opened from neck to tail. Moderately decreases The Shape's Terror Radius in Evil Within II . Moderately increases The Shape's Terror Radius in Evil Within III .	Evil Within
	Iridescent Button	A glass-like button moulded from The Fog that captures The Legion's likeness. The surface is warm and reverberating with The Entity's power. During Feral Frenzy: The Legion's Terror Radius affects the entire Map. Any Pallets you vault are immediately broken. This effect lasts until the Power gauge is depleted. "The youth consumed by the iridescent glass magnifies and widens the reach of The Entity."	Feral Frenzy
	Violet Waxcap	A dark fleshed mushroom from the Upside Down that allows The Demogorgon to telepathically distort the senses in its prey. Slightly increases the duration of the Undetectable Status Effect applied to The Demogorgon when emerging from a Portal.	Of the Abyss
	Vermilion Webcap	A bright red poisonous mushroom from the Upside Down. Moderately increases the duration of the Undetectable Status Effect applied to The Demogorgon when emerging from a Portal. "Still experimenting with this specimen, so far our results are inconsistent." — Hawkins National Laboratory
	Obsidian Goblet	An ancient looking goblet carved from pure obsidian. The Executioner gains the Undetectable Status Effect when standing on a Rites of Judgement trail. "Forgive me for waking you. But without you, I just can't go on." — James Sunderland	Rites of Judgement
	"Bad Man's" Last Breath	A powerful last breath snatched from Crotus Prenn Asylum Patient known as the "Bad Man". In the hands of The Nurse, it jolts with intensity. Grants The Nurse the Undetectable Status Effect after hitting a Survivor with a successful post-Blink Attack. This effect lasts for 16 seconds and may only be triggered once every 60 seconds.	Spencer's Last Breath
	"The Beast" - Soot	The Kunwulju symbol, representing the Realm of Fear, is finger-drawn out of soot on the body of the Bell. The Wraith's Terror Radius is no longer suppressed when cloaked. Grants 100 % Bonus Bloodpoints for Stalking and Surprise Attack Score Events.	Wailing Bell
	"The Ghost" - Soot	The Khugwemuu symbol, representing the spirit world, is finger-drawn out of soot on the body of the Bell. After uncloaking, The Wraith's Terror Radius and Red Stain will remain suppressed for 6 seconds.

Perks

	Agitation	You get excited in anticipation of hooking your prey. While carrying a Survivor, your Movement speed is increased by 6/12/18 % and your Terror Radius is increased by 12 metres. "At some point, the excitement of hooking one of us becomes more important than the desire to kill us."
	Borrowed Time	You are fuelled with an unexpected energy when saving an Ally from a Hook within the Killer's Terror Radius. For 10/12/15 seconds after unhooking a Survivor within the Killer's Terror Radius , the unhooked Survivor is protected by the Endurance Status Effect. Any damage taken that would put the Survivor into the Dying State will instead trigger the Deep Wound Status Effect, after which the Survivor has 20 seconds to Mend themselves. Taking any damage while under the effect of Deep Wound or if its timer runs out will put the Survivor into the Dying State. "Probably stings like hell, but it ain't gonna kill ya. Up and at 'em soldier. Time to move!" — Bill Overbeck
	Coulrophobia	Your presence alone instils great fear. The Healing speed of Survivors within your Terror Radius is reduced by 30/40/50 %.
	Dark Devotion	The display of your Powers creates a whirlwind of panic that spreads throughout the land. You become obsessed with one Survivor. Hitting the Obsession with a Basic Attack causes them to emit a Terror Radius of 32 metres for the next 20/25/30 seconds. You are granted the Undetectable Status Effect. The Obsession hears their own Terror Radius. 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)
	Distressing	Your horrifying emanation strikes at a supernaturally long distance. Your Terror Radius is increased by 22/24/26 %. Distressing grants 100 % bonus Bloodpoints for actions in the Deviousness Category. The bonus Bloodpoints are only awarded during the Trial. "Bask in their fear."
	Diversion	Activate-able Perk. Standing within the Killer's Terror Radius while not in a Chase for 40/35/30 seconds activates Diversion. Once Diversion is activated, press the Active Ability button while crouched and motionless to throw a pebble, creating a distraction for the Killer at a distance of 20 meters. The distraction consists of the following: Loud Noise notification Scratch Marks Diversion's timer resets once the ability has been activated. "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 become obsessed with one Survivor. You lurk in the shadows, eliminating your victims one by one. Each time you hook your Obsession , you gain 1 Token, up to a maximum of 2/3/4 Tokens: While in a Chase, your Terror Radius is reduced by 4 metres per accumulated Token. When a Survivor rescues the Obsession from the Hook, that Survivor will become the new Obsession. All accumulated Tokens are lost when Obsession is sacrificed or killed. 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
	Insidious	Unlocks your stealth ability. After standing still for 4/3/2 seconds, you are granted the Undetectable Status Effect until you act or move again.
	Monitor & Abuse	Meticulous in your approach, terrifying in your application. Your base Terror Radius is increased by 8 metres. Whenever you are outside of a Chase, your Terror Radius is reduced by 16 metres while your Field of View is increased by 3/5/10 °. Field of View gains do not stack. "It's time for your treatment!." — Herman Carter, The Doctor
	Object of Obsession	A supernatural bond links you to the Killer. If you are looking in the Killer's direction while outside of their Terror Radius , your link will reveal your Auras to each other. If you are the Killer's Obsession , this effect applies up to a maximum range of 56/64/72 metres. If you are not the Killer's Obsession, this effect only applies up to a maximum range of 44/56/64 metres. Increases the odds of being the Obsession. The Killer can only be obsessed with one Survivor at a time. "He was watching me!" — Laurie Strode
	Overwhelming Presence	Your presence alone instils great fear. 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!"
	Stake Out	Getting close to the Killer fills you with determination. Every 15 seconds you are standing within the Killer's Terror Radius without being chased, Stake Out gains 1 Token, up to a maximum of 2/3/4 Tokens. When Stake Out has at least 1 Token, Good Skill Checks consume 1 Token and are considered Great Skill Checks, granting an additional Progression bonus of 1 %. Great Skill Checks do not 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
	Tinkerer	Whenever a Generator is repaired to 70 %, it triggers a Loud Noise notification and you are granted the Undetectable Status Effect for the next 12/14/16 seconds.
	Trail of Torment	You guide your victims along a path of pain and punishment. After kicking a Generator , you are granted the Undetectable Status Effect until that Generator stops regressing or you damage a Survivor by any means. The Aura of that Generator is revealed to all Survivors in yellow. Trail of Torment has a cool-down of 80/70/60 seconds.
	Unnerving Presence	Your presence alone instils great fear. For all Survivors repairing, healing, or sabotaging within your Terror Radius : Skill Check Trigger odds are increased by 10 %. Skill Check Success zone are reduced by 40/50/60 %. "Its presence befalls us."

Change Log

Patch 1.8.1

• Increased The Nightmare's Terror Radius to 24 metres from formerly 16 metres.

Patch 1.9.3

• Decreased The Hag's Terror Radius to 24 metres from formerly 28 metres.

Patch 2.5.0

• Increased The Pig's Terror Radius to 32 metres from formerly 28 metres.

Patch 2.6.0

• 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

• Increased The Legion's Terror Radius to 32 metres from formerly 24 metres.

Terror Radius Examples

The following table lists several examples of resulting Terror Radii when using Unlockables that affect it in some way:

Unlockable	Modifier	4.6 m/s Killer	4.4 m/s Killer
no Unlockables	-	32 metres	24 metres
Agitation	+12 m (Carrying)	44 metres	36 metres
Distressing	+22 %	39.04 metres	29.28 metres
	+24 %	39.68 metres	29.76 metres
	+26 %	40.32 metres	30.24 metres
Furtive Chase	-4 m (1 Token)	28 metres	20 metres
	-8 m (2 Tokens)	24 metres	16 metres
	-12 m (3 Tokens)	20 metres	12 metres
	-16 m (4 Tokens)	16 metres	8 metres
Monitor & Abuse *	-16 m (no Chase)	24 metres	16 metres
	default (in Chase)	40 metres	32 metres

Trivia

• The Lullabies of The Huntress and The Nightmare are not considered part of their Terror Radius and cannot be altered with any Perks.
  • The Nightmare's Terror Radius also affects Survivors both in and outside the Dream World, even if they do not hear the Heartbeat outside of it.
• Unlockables that affect the Terror Radius via a percentage will generally have their effect applied first before Unlockables that affect it via a given number.