Void Fog

Void Fog is the rapidly-ticking damage dealt by areas in the Void. These areas are accompanied by one or more bubbles in which the effect is cleared.

The Survivors of the Void - DLC Content
Void Fog is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Void FogSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Void Fog (Debuff)
Recipient is under the effect of Void Fog.Indicator status effect used to show the recipient is under the effect of Void Fog, which deals a small amount of damage multiple times per second, increasing with each tick. This damage cannot be blocked or reduced by items such as Tougher TimesTougher Times
Chance to block incoming damage.
15% (+15% per stack) chance to block incoming damage. Unaffected by luck. or Repulsion Armor PlateRepulsion Armor Plate
Receive flat damage reduction from all attacks.
Reduce all incoming damage by 5 (+5 per stack). Cannot be reduced below 1.. and Survivors of the Void - DLC Content
Void Fog Strong is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Void Fog StrongSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Void Fog Strong (Debuff)
Recipient is under the effect of the Strong Void Fog.Indicator status effect used to show the recipient is under the effect of Strong Void Fog, which deals a small amount of damage multiple times per second, increasing with each tick. This damage cannot be blocked or reduced by items such as Tougher TimesTougher Times
Chance to block incoming damage.
15% (+15% per stack) chance to block incoming damage. Unaffected by luck. or Repulsion Armor PlateRepulsion Armor Plate
Receive flat damage reduction from all attacks.
Reduce all incoming damage by 5 (+5 per stack). Cannot be reduced below 1.. debuffs given to the player are purely visual and only serve as indicators to the player, as the damage dealt is by a controller on the stage. The debuffs persist for 4 and 5 seconds respectively after leaving the damage areas, but damage stops applying the moment the player leaves the area.

The damage dealt bypasses armor, so it bypasses:

• Hidden Invincibility
  • Survivors of the Void - DLC Content
    Goobo Jr. is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info. Goobo Jr.100sSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.Goobo Jr.
    Create a clone of you for 30 seconds.
    Spawn a gummy clone that has 300% damage and 300% health. Expires in 30 seconds.'s initial spawn
  • MercenaryMercenaryThe Mercenary is a high skill melee survivor that uses his many dodges to weave in and out of combat.
    Class: Melee
    HP: 110 (+33 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Hired Blade's skills that give invincibility ( Blinding AssaultBlinding Assault (Utility)Stunning. Dash forward, dealing 300% damage. If you hit an enemy, you can dash again, up to 3 total.
    Survivor: Mercenary, Focused AssaultFocused Assault (Utility)Stunning. Dash forward, dealing 700% damage and Expose enemies after 1 second.
    Survivor: Mercenary, and EviscerateEviscerate (Special)Target the nearest enemy, attacking them for 110% damage repeatedly. You cannot be hit for the duration.
    Survivor: Mercenary)
  • Spawning into the stage
  • Survivors of the Void - DLC Content
    Void Fiend is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info. Void FiendSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.Void FiendThe Void Fiend is a corrupted survivor that fluctuates between a controlled and corrupted form, each with different strengths and weaknesses. Managing this curse has become its fate.
    Class: Ranged
    HP: 110 (+33 per level)
    Damage: 12 (+2.4 per level)
    Armor: 0
    Umbra: Corrupted Amnesiac's transformation into its Void CorruptionVoid Corruption (Passive)At full Corruption, transform your abilities into more aggressive forms.
    Survivor: Void Fiend form
  • ShadowfadeShadowfade (Utility)Fade away, becoming intangible and gaining +30% movement speed. Heal for 18.2% (+18.2% per stack) of your maximum health. Lasts 3 (+3 per stack) seconds.
    Survivor: Heretic ( Strides of HeresyStrides of Heresy
    Replace your Utility Skill with 'Shadowfade'.
    Replace your Utility Skill with Shadowfade.
    
    Fade away, becoming intangible and gaining +30% movement speed. Heal for 18.2% (+18.2% per stack) of your maximum health. Lasts 3 (+3 per stack) seconds.)
• Any type of Armor:
  • Armor
  • Adaptive Armor
  • Repulsion Armor PlateRepulsion Armor Plate
    Receive flat damage reduction from all attacks.
    Reduce all incoming damage by 5 (+5 per stack). Cannot be reduced below 1.
  • PlanulaPlanula
    Receive flat healing when attacked.
    Heal from incoming damage for 15 (+15 per stack).
• Any type of blocking:
  • Tougher TimesTougher Times
    Chance to block incoming damage.
    15% (+15% per stack) chance to block incoming damage. Unaffected by luck.
  • Survivors of the Void - DLC Content
    Safer Spaces is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info. Safer SpacesSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.Safer Spaces
    Block the next source of damage. Corrupts all Tougher Times.
    Blocks incoming damage once. Recharges after 15 seconds (-10% per stack) Corrupts all Tougher Times.

Mechanics

Every tickPeriodSeconds that the player is outside of the safe zone, they take damage according to a formula and gain 1 fog stack. Once the player goes back into the safe zone, the stacks are reset to zero. The safe area is inverted in Survivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Void Seeds, which means the player is safe outside of them but takes damage inside of them. The damage formula is

damagePerTick = healthFractionPerSecond * (1 + fogStacks * healthFractionRampCoefficientPerSecond * tickPeriodSeconds) * tickPeriodSeconds * maxCombinedHealth

where maxCombinedHealth = maxHealth + maxShield.

The values for each Void Fog damage source are summarised in the table below. Note that since the Void Fog in the Void FieldsVoid Fields (Hidden Realm)
Cosmic Prison
Hidden Realm accessible only through the Bazaar Between Time. Until the cell is stabilized, the Void Fields will constantly "suffocate" the player for a small percentage of their current health. has a ramp-up coefficient of 0, the damage taken does not increase with time and it is possible to constantly outheal it with Bustling FungusBustling Fungus
Heal all nearby allies after standing still for 1 second.
After standing still for 1 second, create a zone that heals for 4.5% (+2.25% per stack) of your health every second to all allies within 3m (+1.5m per stack). or Survivors of the Void - DLC Content
Weeping Fungus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info. Weeping FungusSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Weeping Fungus
Heal while sprinting. Corrupts all Bustling Fungi.
Heals for 2% (+2% per stack) of your health every second while sprinting. Corrupts all Bustling Fungi..

Fog	Area	Damages Team	Tick Period Seconds	Health Fraction Per Tick	Health Fraction Ramp Coefficient Per Tick	Radius
	Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Seed	All Except Void	0.5	0.025	0.1	60
	Void FieldsVoid Fields (Hidden Realm) Cosmic Prison Hidden Realm accessible only through the Bazaar Between Time. Until the cell is stabilized, the Void Fields will constantly "suffocate" the player for a small percentage of their current health.	Player	0.2	0.05	0	5 or 15
	Survivors of the Void - DLC Content Void Locus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Void LocusSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Locus (Hidden Realm) Cell IIIVIIIIIILVIIIVLVILIVLLLVVVILIVLI You dream of potential. The Void Locus contains many Void Potentials and Cradles in place of chests, and is inhabited by Void monsters.	Player	0.2	0.05	0.1	20
	Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Simulacrum	All Except Neutral	0.2	0.05	0.1	15 or 60
	Survivors of the Void - DLC Content Voidling is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Voidling Phase 2Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Voidling Diviner of the DeepHP: 2000 (+600 per level) Damage: 15 (+3 per level) Class: Ranged Speed: 45 m/s Armor: 20	All Except Void	0.2	0.01	0.1	1000
	Survivors of the Void - DLC Content Voidling is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Voidling Phase 3Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Voidling Diviner of the DeepHP: 2000 (+600 per level) Damage: 15 (+3 per level) Class: Ranged Speed: 45 m/s Armor: 20	All Except Void	0.2	0.01	0.1	150

For example, something with 600 health in the Survivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Simulacrum would take 6, 6.12, 6.24, 6.36, 6.48 in 5 ticks or 31.2 damage within a second. More generally, any entity takes at least

$baseDamage = maxCombinedHealth \times healthFractionPerSecond \times tickPeriodSeconds$

damage per tick, which is increased by

$rampDamage = baseDamage \times healthFractionRampCoefficientPerSecond \times tickPeriodSeconds$

for each fog stack. If the player is to stay in the danger zone for 5 ticks, this would contribute 0, 1, 2, 3, and then 4 fog stacks, which can be generalised as an arithmetic sum with $ticks \times (ticks - 1) / 2$. Therefore, the accumulated damage one is expected to receive over a period of time is:

$totalDamage = baseDamage \times ticks + rampDamage \times ticks \times (ticks - 1) / 2$

Continuing the example for Survivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.Simulacrum, substituing all the relevant constants in and solving the quadratic equation $totalDamage = maxCombinedHealth$ with respect to ticks, we conclude that any entity can take damage for 62 tick periods, or 12.4 seconds, before dying. This assumes the entity enters the danger zone at full health and does not receive any healing for its duration.

Notes

• If the player is within the overlap of multiple sources of Void Fog damage, e.g., two Void Seeds, each source will tick and keep track of the fog stack count independently from the rest.
  • However, this is not the case for Survivors of the Void - DLC Content
    Void Locus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info. Void LocusSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.Void Locus (Hidden Realm)
    Cell IIIVIIIIIILVIIIVLVILIVLLLVVVILIVLI
    You dream of potential.
    
    The Void Locus contains many Void Potentials and Cradles in place of chests, and is inhabited by Void monsters., where there is one global fog controller which manages multiple safe zones. This means that if there are multiple Deep Void Signals active, the player will not take any damage as long as they are inside any of the safe zones.
• While the Survivors of the Void - DLC Content
  Weeping Fungus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info. Weeping FungusSurvivors of the Void - DLC Content
  This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
  Click for more info.Weeping Fungus
  Heal while sprinting. Corrupts all Bustling Fungi.
  Heals for 2% (+2% per stack) of your health every second while sprinting. Corrupts all Bustling Fungi. can greatly extend the time a player can survive inside the Void Fog, the Personal Shield GeneratorPersonal Shield Generator
  Gain a recharging shield.
  Gain a shield equal to 8% (+8% per stack) of your maximum health. Recharges outside of danger. has the opposite effect, since it cannot be regenerated while taking damage and it also amplifies the incoming damage since it contributes towards the character max health.
• Void Fog damage is halved for Devoted Lemurians.