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 Template:IconLink.

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

For most Killers in Dead by Daylight, their Terror Radius is decided by their base Movement speed: 32 metres for those moving at 4.6 m/s and 24 metres for those moving at 4.4 m/s.

However, some Killers do not follow that general rule and either have a different Terror Radius altogether or even multiple Terror Radii, as can be seen in the Table below.

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.

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.

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.
For all Killers that do not use either of the three generic Chase Music themes, the Chase Music is the same as the fourth layer of the Terror Radius music Survivors hear, which for them plays when the Killer is chasing them.

Two Killers were an exception to this and had a unique Chase Music, until that was changed to the fourth layer of their Terror Radius as well: The Demogorgon and The Oni.
Their unique Chase Music is still present in the files in the Table below.

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.

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.

With the exception of the name-giving Lullaby sung by The Template:IconLink, as she was the introductory Killer of that mechanic, a Lullaby in Dead by Daylight merely refers to any Terror-Radius-like mechanic fulfilling the properties listed below, which are different from those of regular Terror Radii.

Other Killers with a Lullaby mechanic, generally refer to it under a different name:

Lullaby properties:

• Lullabies are non-directional.
• Lullabies have a fixed, unalterable range.
  • Lullabies are not affected by Unlockables that influence the Terror Radius.
  • Lullabies are not suppressed by the Template:IconLink Status Effect.

Killers with a Lullaby:

• The Template:IconLink: She hums a literal children's Lullaby, refers to the mechanic as a Lullaby.
• The Template:IconLink: Survivors hear a nursery rhyme when inside the Dream World, refers to the mechanic as a Lullaby.
• The Template:IconLink: Victor emits shrieks and groans when he is not with Charlotte, refers to the mechanic as Shrieks.
• The Template:IconLink: He emits a modified version of the first layer of his Terror Radius, refers to the mechanic as a Melody.
• The Template:IconLink: She emits a metallic screeching noise while Demanifested and inside the Otherworld, refers to the mechanic as a Lullaby.

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.

Fake Terror Radius 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 Template:IconLink or Template:IconLink will not charge their Tokens while inside a Fake Terror Radius, which can be used to distinguish it from a real one.
    • Perks like Template:IconLink will not trigger the Template:IconLink Status Effect for Survivors inside a Fake Terror Radius.

Killers with a Fake Terror Radius:

• The Template:IconLink: the Terror Radius emitted by a Mud Phantasm is a Fake Terror Radius.
• The Template:IconLink: the Illusionary Terror Radii inflicted by the Template:IconLink or Template:IconLink Add-on Series is a Fake Terror Radius.

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 Template:IconLink Status Effect.

• The Template:IconLink cloaking himself and entering the Spirit World.
• The Template:IconLink using the Template:IconLink or the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink while remaining in Evil Within I.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink crouching.
• The Template:IconLink using Night Shroud.
• The Template:IconLink after traversing the Upside Down.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink using the Template:IconLink.
• The Template:IconLink while Demanifested.

List of Terror Radii, Chase Music, and Lullabies

Killer	Radius Type	Range	Movement Speed	Terror Radius Music	Chase Music	Lullaby Audio
Template:IconLink	Terror Radius	32 metres	4.6 m/s	Themes 01-06	Themes 01-03	No Lullaby
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	3.85 m/s	Themes 01-06	Themes 01-03
Template:IconLink	Terror Radius	6 metres (Evil Within I)	4.2 m/s
		16 metres (Evil Within II)	4.6 m/s
		32 metres (Evil Within III)	4.6 m/s
Template:IconLink	Terror Radius	24 metres	4.4 m/s	Themes 01-06	Themes 01-03
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	20 metres	4.4 m/s	Themes 01-06	Themes 01-03
	Lullaby (Hum)	45 metres
Template:IconLink	Terror Radius	32 metres	4.6 m/s			No Lullaby
Template:IconLink	Lullaby (Nursery rhyme)	32 metres (Dream World)	4.6 m/s
	Terror Radius	32 metres
Template:IconLink	Terror Radius	32 metres	4.6 m/s			No Lullaby
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	24 metres	4.4 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
		40 metres (Feral Frenzy)
Template:IconLink	Terror Radius	32 metres	4.6 m/s	Themes 01-06	Themes 01-03
Template:IconLink	Terror Radius	32 metres	4.6 m/s	File:TerrorRadius GhostFace.ogg	File:ChaseMusic GhostFace.ogg
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	4.4 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres (Charlotte)	4.6 m/s
	Lullaby (Shriek)	12 metres (Victor, idle)
		14 metres (Victor, attached)
		18 metres (Victor, controlled)
Template:IconLink	Terror Radius	24 metres	4.4 m/s
	Lullaby (Melody)	8-40 metres
Template:IconLink	Terror Radius	32 metres	4.6 m/s			No Lullaby
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	32 metres	4.6 m/s
Template:IconLink	Terror Radius	24 metres	4.6 m/s
	Lullaby	24 metres (Otherworld)

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

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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 4.5.0

• 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.

Patch 5.7.0

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

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	4.6 m/s Killer	4.4 m/s Killer
no Unlockables	-	32 metres	24 metres
Template:IconLink	+12 m (Carrying)	44 metres	36 metres
Template:IconLink	+22 %	39.04 metres	29.28 metres
	+24 %	39.68 metres	29.76 metres
	+26 %	40.32 metres	30.24 metres
Template:IconLink	-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
Template:IconLink*	-16 m (no Chase)	24 metres	16 metres
	default (in Chase)	40 metres	32 metres

Trivia

• Unlockables that affect a Terror Radius via a percentage tend to apply that on top of the base Terror Radius, ignoring other Unlockables that affect it by a concrete numerical value.