Pathogen
r/PathogenGame Join the beta

Lineage & Hosts

Each run is one generation of your virus. Strains mutate it, legacy bonuses carry forward, and every host has a genome and conditions of its own. Some hosts have fur, feathers or flippers.

56strains
20boon strains (6 of them elite)
19curse strains
13mixed strains
4virus-jump strains
3strain offers after every Infect Game Mode run
50%chance the parent's strain is offered again to stack
40%chance of a virus-jump offer

Lineage

Lineage & generations

Every Infect Game Mode run is one generation of a single virus lineage. When a run ends you pick the mutation the next generation is born with, and every finished generation leaves a small permanent bonus to the ones after it.

The Lineage screen
The Lineage screen

Generations

Core loop

Each Infect Game Mode run is one generation of your virus, born with at most one strain mutation. The lineage keeps a record of every generation and how its run went.

Details
  • Generation 1 has no mutation; every later generation carries the strain you chose for it
  • Each generation records rooms cleared, kills, whether it took the host, and the traits it picked
  • Abandoning a run doesn't end the generation: it plays again next run and its recorded traits are cleared
  • Only Infect Game Mode runs make generations; Pandemic and Endless Game Mode runs don't count toward the lineage, use no strain and get no legacy
  • Fully infecting the host (the brain falls) counts as a host taken

One lineage for every virus

Shared

All four viruses share one lineage: the same level, skill tree, Petri Lab and gear. A generation's mutation decides which virus it is.

Details
  • The next run always plays the current generation's virus
  • A generation keeps its parent's virus unless its strain is a virus jump
  • Family Tree lanes, top to bottom: Influenza A, Retrovirus, Halovirus, Filovirus

Influenza A generation names

Naming

Influenza A generations are named like real flu strains: type, place, generation, year and subtype, for example A/Panama/14/27 (H1N1).

Details
  • Format: A/place/generation/year (HxNy)
  • The subtype rolls H1–H18 and N1–N11 for each generation
  • The year starts at 26 and goes up by one every 10 generations
  • The place is one of 29 real cities and regions, such as Brisbane, Hong Kong, Lagos, Oslo, Kyoto or Puerto Rico

Retrovirus generation names

Naming

Retrovirus generations carry a group and clade tag, a place and the generation number, for example RTV/M:C/Lagos/12.

Details
  • Format: RTV/M:clade/place/generation
  • Clades: A, B, C, D, F, G, H, J or K

Filovirus generation names

Naming

Filovirus generations are named after a variant, a place and the generation number, for example FLV/Cinder/Nairobi/9.

Details
  • Format: FLV/variant/place/generation
  • Variants: Cinder, Garnet, Vesper, Thorn or Ember

Halovirus generation names

Naming

Halovirus generations carry a lineage tag, a place and the generation number, for example HLV/HX.1/Bangkok/7.

Details
  • Format: HLV/lineage/place/generation
  • Lineage tags: HX.1, HQ.2, HV.3, HZ.1, HK.4 or HX.5

Choosing the next generation

After every run

When an Infect Game Mode run ends, win or lose, you choose 1 of 3 strains for the next generation to be born with. Picking the same one again stacks it and makes it stronger.

Details
  • Offers come from every strain your level and lineage have unlocked
  • 50% chance one offer is the parent's own strain again, one stack higher
  • 40% chance one offer is a jump to another unlocked virus
  • The first offer always keeps your current virus, so you can stay with the one you like
  • When a new virus opens by level, the next set of offers guarantees a jump to it once
  • Each card shows its type: BOON, MIXED or CURSE · BIGGER REWARDS

Inheritance & stacking

Stacking

Inheriting the parent's strain stacks it: each generation in a row makes it stronger. The card reads INHERITED ×N · AMPLIFIED and shows what it was before.

Details
  • ×2 is 50% stronger, ×3 twice as strong, ×4 two and a half times, and so on
  • Numbers have limits: damage tops out at +300%, move speed at double
  • Extra projectiles grow by 1 per stack, at most +2 over the strain's base
  • Envelope Shield blocks one more hit per stack, up to 4 per room
  • Lysis bursts grow with the stack: 18, then 27, then 36 damage
  • A stacked strain also leaves a bigger legacy (+25% per extra stack)

Virus jumps

Virus jump

Four special boon strains turn the lineage into a different virus for the next generation. The Retrovirus, Halovirus and Filovirus jumps open as your level rises.

Details
  • Reverse Transcriptase Capture → Retrovirus: offered from Level 4
  • Spike Recombination → Halovirus: offered from Level 8
  • Filovirus Spillover → Filovirus: offered from Level 12
  • Segment Reassortment → back to Influenza A: offered once your lineage is another virus
  • A virus your lineage has already been stays open for jumps
  • Inheriting your own jump strain again keeps the virus and amplifies its bonus
  • A jump shows on the Family Tree as a thick dashed branch crossing into the new virus's lane, and adds that virus to the Codex

Strain unlocks

Unlock schedule

New kinds of strains join the offers as your level and lineage grow.

Details
  • 14 boons: available from the start
  • 13 mixed strains: Level 6 · Gen 2
  • 19 curse strains: Level 9 · Gen 3
  • 6 elite strains (Twin Genome, Ancient Memory, Overcharged, Fortunate Strain, Mutagenic, Lysis Cascade): Level 10 · Gen 5
  • Hunted also waits until Killer T Cells have been introduced (Level 6)
  • Virus jumps: Level 4, 8 and 12

Legacy (Inherited bonuses)

Legacy

Every finished generation that carried a strain passes a small permanent bonus to all later generations. Its strain decides which stat; its kills and stack decide how much.

Details
  • Bonus = the stat's step × kill factor × stack factor
  • Kill factor: 0.25 + kills ÷ 40, up to 3× (reached at 110 kills)
  • Stack factor: +25% for each extra stack the strain had
  • Bonuses add up across generations, each up to its own cap
  • The stat follows the strain's main benefit; every curse leaves a nucleotide bonus
  • Applies in Infect Game Mode to whichever virus you play
  • Tap Inherited on the Family Tree to see each bonus with a bar toward its cap

Legacy: Damage

Cap +25%

Strains that boost damage or add projectiles leave extra damage to every later generation.

Details
  • +1% per generation at kill factor 1; up to +3% from one unstacked generation
  • Left by: Hyperinfectious, Twin Genome, Glass Cannon, Shotgun Genome, Loud and Proud, Segment Reassortment

Legacy: Max HP

Cap +40%

Strains that raise max HP leave extra max HP behind.

Details
  • +2% per generation at kill factor 1; up to +6% from one unstacked generation
  • Left by: Robust Capsid, Juggernaut, Reverse Transcriptase Capture, Filovirus Spillover

Legacy: Move speed

Cap +12%

Strains that make you or your shots faster leave extra move speed.

Details
  • +0.6% per generation at kill factor 1; up to +1.8% from one unstacked generation
  • Left by: Streamlined, Long Reach, Frenzy, Spike Recombination

Legacy: Fire rate

Cap +20%

Strains that make you fire faster leave a faster fire rate.

Details
  • +1% per generation at kill factor 1; up to +3% from one unstacked generation
  • Left by: Rapid Assembly, Berserker Strain, Lean Genome

Legacy: Regeneration

Cap 2 HP/s

Healing strains leave a little health regeneration behind.

Details
  • +0.08 HP/s per generation at kill factor 1; up to +0.24 HP/s from one unstacked generation
  • Left by: Vampiric Uptake, Nutrient-Rich Host, Steady Replication, Bloodlust

Legacy: Stealth

Cap −30%

Stealthy strains make Detection rise slower for every later generation.

Details
  • −1.2% detection gain per generation at kill factor 1; up to −3.6% from one unstacked generation
  • Left by: Silent Spread, Evasive Proteins, Ghost Strain

Legacy: Nucleotides

Cap +60%

Curses and loot strains leave richer hosts: more nucleotides for every later generation.

Details
  • +2.5% per generation at kill factor 1; up to +7.5% from one unstacked generation
  • Left by all 19 curses plus Magnetic Capsid, Fortunate Strain, Mutagenic, Cramped Host and Gambler's Genome

Legacy: Ultimate charge

Cap +40%

Strains that speed up your ultimate or Shift leave faster ultimate charging.

Details
  • +2% per generation at kill factor 1; up to +6% from one unstacked generation
  • Left by: Ancient Memory, Overcharged, Overclocked Ultimate

Legacy: Armor

Cap −12%

Defensive strains make you take less damage in every later generation.

Details
  • −0.6% damage taken per generation at kill factor 1; up to −1.8% from one unstacked generation
  • Left by: Lysis Cascade, Envelope Shield, Barbed Spikes, Chain Reaction

Legacy: Ambush damage

Cap +60%

Ambush Predator leaves stronger ambush hits behind.

Details
  • +3% ambush damage per generation at kill factor 1; up to +9% from one unstacked generation
  • Left by: Ambush Predator

Family Tree

Menu

Tap Lineage on the main menu's virus card to see every generation as a branching tree, with one lane per virus.

Details
  • The header counts your generations and hosts taken
  • Generations run left to right; branches cross lanes when the virus changes
  • Marks: a check for a host taken, an orange ring for the generation playing next, a ring in the strain's own colour for a mutation (thicker when stacked)
  • Tap a generation for its name, virus, strain and the traits it picked that run
  • Tap a virus for its story; locked viruses show the level that unlocks them
  • The title screen and main menu show your current generation number and name, or 'A new lineage begins'

Strain colours

Look

Every strain has its own signature colour that tints your virion and gives it a glowing corona.

Details
  • The corona grows with each stack
  • From ×2 a dashed ring circles the virion
  • Filovirus shows its strain in the corona only

What a growing lineage unlocks

Progression

Finished generations open features alongside your level.

Details
  • The Shift button opens after your first finished run, the Ultimate after your second
  • Hosts & Host Traits: Generation 2
  • Start in deeper areas: Level 3 · Gen 2
  • Mixed strains: Level 6 · Gen 2; Curse strains: Level 9 · Gen 3; Elite strains: Level 10 · Gen 5
  • Legendary & mythic traits: Level 11 · Gen 4
  • Skill tree rows 1–12 need 0, 0, 1, 3, 6, 6, 8, 10, 12, 14, 16 and 20 finished generations

Mutations

Strains

56 strains a generation can be born with: 20 boons (6 of them elite), 13 mixed, 19 curses that pay bigger rewards, and 4 virus jumps. A strain lasts for that generation's run; inheriting it again amplifies it. Values below are at ×1, ×2 and ×3.

Hyperinfectious

Boon

+30% damage.

Details
  • ×2: +45% · ×3: +60%
  • Legacy: damage

Robust Capsid

Boon

+40% max HP.

Details
  • ×2: +60% · ×3: +80%
  • Legacy: max HP

Streamlined

Boon

+20% move speed.

Details
  • ×2: +30% · ×3: +40%
  • Legacy: move speed

Rapid Assembly

Boon

Fire 25% faster.

Details
  • ×2: 38% faster · ×3: 50% faster
  • Legacy: fire rate

Vampiric Uptake

Boon

Auto-attacks heal 1.5% of their damage.

Details
  • ×2: 2.3% · ×3: 3%
  • Legacy: regeneration

Nutrient-Rich Host

Boon

Heal 3 HP for every kill.

Details
  • ×2: 4.5 HP · ×3: 6 HP
  • Legacy: regeneration

Steady Replication

Boon

Regenerate 1 HP per second.

Details
  • ×2: 1.5 HP/s · ×3: 2 HP/s
  • Legacy: regeneration

Envelope Shield

Boon

Block the first hit in every room.

Details
  • ×2: the first 2 hits · ×3: the first 3 hits · up to 4
  • Legacy: armor

Silent Spread

Boon

Detection rises 40% slower.

Details
  • ×2: 60% slower · ×3: 80% slower
  • Legacy: stealth

Evasive Proteins

Boon

Immune cells see 35% less far.

Details
  • ×2: 52% · ×3: 70%
  • Legacy: stealth

Barbed Spikes

Boon

Cells that touch you take 15 damage.

Details
  • ×2: 22.5 · ×3: 30
  • Legacy: armor

Magnetic Capsid

Boon

2.5x pickup range and +20% nucleotides.

Details
  • ×2: 3.3x and +30% · ×3: 4x and +40%
  • Legacy: nucleotides

Long Reach

Boon

Shots fly 35% faster and pierce +1 cell.

Details
  • ×2: 53% faster, pierce +2 · ×3: 70% faster, pierce +2
  • Legacy: move speed

Ambush Predator

Boon

Ambush hits deal 60% more damage.

Details
  • ×2: 90% · ×3: 120%
  • Legacy: ambush damage

Twin Genome

Elite boon

+1 projectile on every shot.

Details
  • ×2: +2 · ×3: +3 (the most it grows)
  • Unlocks at Level 10 · Gen 5
  • Legacy: damage

Lysis Cascade

Elite boon

Dying cells burst, dealing 18 damage to their neighbours.

Details
  • ×2: 27 damage · ×3: 36 damage
  • Unlocks at Level 10 · Gen 5
  • Legacy: armor

Ancient Memory

Elite boon

Start with your ultimate charged; it charges 30% faster.

Details
  • ×2: 45% faster · ×3: 60% faster
  • Unlocks at Level 10 · Gen 5
  • Legacy: ultimate charge

Overcharged

Elite boon

Shift/Latency charges 60% faster and starts ready.

Details
  • ×2: 90% faster · ×3: 120% faster
  • Unlocks at Level 10 · Gen 5
  • Legacy: ultimate charge

Fortunate Strain

Elite boon

RNA strands drop 3x as often.

Details
  • ×2: 4x · ×3: 5x
  • RNA itself only drops in Pandemic Game Mode; in Infect Game Mode each RNA drop breaks down into nucleotides
  • Unlocks at Level 10 · Gen 5
  • Legacy: nucleotides

Mutagenic

Elite boon

Cleared rooms leave mutation orbs 2x as often.

Details
  • ×2: 2.5x · ×3: 3x
  • Unlocks at Level 10 · Gen 5
  • Legacy: nucleotides

Glass Cannon

Mixed

+60% damage, −40% max HP.

Details
  • ×2: +90% damage, −60% HP · ×3: +120% damage, −60% HP
  • Unlocks at Level 6 · Gen 2
  • Legacy: damage

Berserker Strain

Mixed

Fire 40% faster, but clearing rooms doesn't heal.

Details
  • ×2: 60% faster · ×3: 65% faster
  • Unlocks at Level 6 · Gen 2
  • Legacy: fire rate

Juggernaut

Mixed

+60% max HP, −20% move speed.

Details
  • ×2: +90% HP, −30% speed · ×3: +120% HP, −40% speed
  • Unlocks at Level 6 · Gen 2
  • Legacy: max HP

Frenzy

Mixed

You move 25% faster and every cell moves 25% faster.

Details
  • ×2: both 38% faster · ×3: both 50% faster
  • Unlocks at Level 6 · Gen 2
  • Legacy: move speed

Shotgun Genome

Mixed

+2 projectiles, −30% damage, shots 15% slower.

Details
  • ×2: +3 projectiles, −45% damage, 23% slower · ×3: +4, −60%, 30% slower
  • Unlocks at Level 6 · Gen 2
  • Legacy: damage

Chain Reaction

Mixed

Dying cells burst for 18 damage: it hurts them and you.

Details
  • ×2: 27 damage · ×3: 36 damage
  • Unlocks at Level 6 · Gen 2
  • Legacy: armor

Bloodlust

Mixed

Auto-attacks heal 2% of their damage, but rooms don't heal.

Details
  • ×2: 3% · ×3: 4%
  • Unlocks at Level 6 · Gen 2
  • Legacy: regeneration

Loud and Proud

Mixed

+35% damage, detection rises 100% faster.

Details
  • ×2: +53% damage, 150% faster · ×3: +70% damage, 200% faster
  • Unlocks at Level 6 · Gen 2
  • Legacy: damage

Ghost Strain

Mixed

Cells see 50% less far, but −30% max HP.

Details
  • ×2: 75% less far, −45% HP · ×3: 80% less far, −60% HP
  • Unlocks at Level 6 · Gen 2
  • Legacy: stealth

Cramped Host

Mixed

2 fewer rooms per organ, 30% more cells in each.

Details
  • ×2: 3 fewer rooms, 45% more cells · ×3: 4 fewer rooms, 60% more cells
  • Unlocks at Level 6 · Gen 2
  • Legacy: nucleotides

Gambler's Genome

Mixed

+100% nucleotides, cells hit 50% harder.

Details
  • ×2: +150%, cells 75% harder · ×3: +200%, cells 100% harder
  • Unlocks at Level 6 · Gen 2
  • Legacy: nucleotides

Overclocked Ultimate

Mixed

Ultimate charges 100% faster, Shift/Latency 50% slower.

Details
  • ×2: ultimate 150% faster, Shift 75% slower · ×3: 200% faster, Shift 75% slower
  • Unlocks at Level 6 · Gen 2
  • Legacy: ultimate charge

Lean Genome

Mixed

+30% speed and fire 20% faster, −25% max HP.

Details
  • ×2: +45% speed, fire 30% faster, −38% HP · ×3: +60%, 40% faster, −50% HP
  • Unlocks at Level 6 · Gen 2
  • Legacy: fire rate

Fragile Envelope

Curse

−40% max HP · +60% nucleotides.

Details
  • ×2: −60% HP, +90% · ×3: −60% HP, +120%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Sluggish

Curse

−20% move speed · +40% nucleotides.

Details
  • ×2: −30%, +60% · ×3: −40%, +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Hyperimmune Host

Curse

Cells have +40% HP · +50% nucleotides, 1.5x RNA.

Details
  • ×2: +60% HP, +75%, 1.8x RNA · ×3: +80% HP, +100%, 2x RNA
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Swarming Response

Curse

+40% more cells per room · +50% nucleotides.

Details
  • ×2: +60% cells, +75% · ×3: +80% cells, +100%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Agile Defenders

Curse

Cells move 25% faster · +40% nucleotides.

Details
  • ×2: 38% faster, +60% · ×3: 50% faster, +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Sharpened Antibodies

Curse

Cells hit 35% harder · +50% nucleotides.

Details
  • ×2: 53% harder, +75% · ×3: 70% harder, +100%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Paranoid Host

Curse

Detection rises 60% faster and starts at 30 · +40% nucleotides.

Details
  • ×2: 90% faster, starts at 45, +60% · ×3: 120% faster, starts at 60, +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Hypoxic Tissue

Curse

You can only see a small circle · +50% nucleotides, 2x RNA.

Details
  • ×2: +75%, 2.5x RNA · ×3: +100%, 3x RNA
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Hunted

Curse

A Killer T cell is hunting you from the start · +60% nucleotides, 2x RNA.

Details
  • ×2: +90%, 2.5x RNA · ×3: +120%, 3x RNA
  • Unlocks at Level 9 · Gen 3, once Killer T Cells have been introduced
  • Legacy: nucleotides

No Respite

Curse

Clearing rooms no longer heals · +40% nucleotides.

Details
  • ×2: +60% · ×3: +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Volatile Hosts

Curse

Dying cells burst and can hurt you · +40% nucleotides.

Details
  • ×2: +60% · ×3: +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Inflamed

Curse

Wounded cells slowly regenerate · +40% nucleotides.

Details
  • ×2: +60% · ×3: +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

High-Affinity Antibodies

Curse

Enemy shots fly 40% faster · +35% nucleotides.

Details
  • ×2: 60% faster, +53% · ×3: 80% faster, +70%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Unstable Tissue

Curse

2.6x as many pits · +40% nucleotides.

Details
  • ×2: 3.4x pits, +60% · ×3: 4.2x pits, +80%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Vigilant Cells

Curse

Every cell is already alert · +50% nucleotides.

Details
  • ×2: +75% · ×3: +100%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Long Infection

Curse

+3 rooms in every organ · +30% nucleotides.

Details
  • ×2: +5 rooms, +45% · ×3: +6 rooms, +60%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Titan Guardians

Curse

Bosses have +60% HP · +40% nucleotides, 2x RNA.

Details
  • ×2: +90% boss HP, +60%, 2.5x RNA · ×3: +120%, +80%, 3x RNA
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Stiff Envelope

Curse

Dash takes 2x as long to recharge · +35% nucleotides.

Details
  • ×2: 2.5x, +53% · ×3: 3x, +70%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Weak Replication

Curse

−25% damage · +50% nucleotides.

Details
  • ×2: −38%, +75% · ×3: −50%, +100%
  • Unlocks at Level 9 · Gen 3
  • Legacy: nucleotides

Segment Reassortment

Virus jump

Becomes Influenza A. +10% damage.

Details
  • ×2: +15% · ×3: +20%
  • Offered once your lineage is another virus
  • Legacy: damage

Reverse Transcriptase Capture

Virus jump · Level 4

Becomes Retrovirus. +12% max HP.

Details
  • ×2: +18% · ×3: +24%
  • Offered from Level 4
  • Legacy: max HP

Spike Recombination

Virus jump · Level 8

Becomes Halovirus. +8% move speed.

Details
  • ×2: +12% · ×3: +16%
  • Offered from Level 8
  • Legacy: move speed

Filovirus Spillover

Virus jump · Level 12

Becomes Filovirus. +15% max HP.

Details
  • ×2: +22% · ×3: +30%
  • Offered from Level 12
  • Legacy: max HP

Hosts

Hosts & genome

Every Infect and Pandemic Game Mode run starts by landing on a random host: usually a person, sometimes an animal. From Generation 2, each host has a genome tier and hidden traits that help or fight you, revealed the moment you infect them.

Landing on a host

Run start

Each run drops you straight onto a random host behind an INFECTED title: usually a person, about 1 time in 5 an animal. Its genome tier and traits are revealed as you land.

Details
  • 11 settings, picked at random, decide which animals you can land on: downtown, city park, deep forest, mountain trail, limestone cave, lake, riverbank, fishing boat, cruise ship deck, farm and polar research station
  • About 1 run in 5 lands on one of the setting's animals instead of a person (in Pandemic Game Mode, the city's own wildlife)
  • An animal you land on joins the Codex
  • Host genomes unlock at Generation 2; before that hosts have no traits or conditions
  • Endless Game Mode runs have no host

Host reveal card

Reveal

Landing shows who you infected: name, age, sex, genome tier, and every trait and condition with its effect and a real-world fact.

Details
  • Header: HOST INFECTED, or ANIMAL HOST INFECTED · ZOONOSIS
  • The tier badge lists its payout, e.g. +30% nucleotides · traits ×2.2 on a Legendary genome
  • Traits that help you show a green up arrow, ones that fight you a red down arrow, animal signatures a paw
  • A condition gets top billing above the genes
  • Tap Begin infection to start the run

Names, ages & sex

Hosts

People get a first name and an age from 18 to 84; animals get their species name and an age from 1 to 12 years. A female or male symbol follows each name.

Details
  • 20 default names, from Maria, James and Aiko to Kwame, Hiro and Tomás
  • In Pandemic Game Mode people take names from the city you're infecting
  • A person's sex matches their name; an animal's is random

Genome traits

Genome

People carry 2 to 5 hidden traits by tier, always at least one that helps and one that fights you. Animals carry their species' signature trait plus 1 to 4 more, always including one that fights back.

Details
  • 27 traits: 20 general and 7 animal signatures
  • Trait strength grows with tier: ×1, ×1.25, ×1.5, ×1.8, ×2.2, ×2.6, ×3.2
  • 7 traits only appear on people
  • Among animals, only farm animals (cow, pig, chicken) can carry Up-to-Date Vaccines
  • Some traits wait for their system: power-up genes need Power-ups (Level 2), Up-to-Date Vaccines needs Elite Cells (Level 4), tumor genes need Tumors & Metastasis (Level 7)
  • Some trait names change when you play Retrovirus
  • Some Pandemic Game Mode cities give every host on the street a trait (Tokyo: Ageing Immune System; Istanbul: Trained Immunity) or make rare genomes 5x as common

Common genome

Tier 1

The everyday host: 2 traits at normal strength and no extra payout.

Details
  • 40% of people, 38% of animals
  • Traits ×1 · +0% nucleotides
  • Condition chance: 22% (animals 30%)

Uncommon genome

Tier 2

Shown in green: slightly stronger traits and a small payout.

Details
  • 28% of people, 27% of animals
  • 2 traits · traits ×1.25 · +5% nucleotides
  • Condition chance: 26% (animals 34%)

Rare genome

Tier 3

Shown in blue: a third trait and stronger effects.

Details
  • 18% of people, 19% of animals
  • 3 traits · traits ×1.5 · +10% nucleotides
  • Condition chance: 30% (animals 38%)

Epic genome

Tier 4

Shown in purple: 3 traits at nearly double strength.

Details
  • 10% of people, 11% of animals
  • 3 traits · traits ×1.8 · +18% nucleotides
  • Condition chance: 34% (animals 42%)

Legendary genome

Tier 5

Shown in orange: 4 traits at more than double strength.

Details
  • 2.6% of people, 3.3% of animals
  • 4 traits · traits ×2.2 · +30% nucleotides
  • Condition chance: 38% (animals 46%)

Mythic genome

Tier 6

Shown in red: 4 extreme traits and a big payout.

Details
  • 1% of people, 1.2% of animals
  • 4 traits · traits ×2.6 · +45% nucleotides
  • Condition chance: 42% (animals 50%)

Prismatic genome

Tier 7

The rarest host, shown in cycling rainbow colours: 5 traits at more than triple strength.

Details
  • 0.4% of people, 0.5% of animals
  • 5 traits · traits ×3.2 · +70% nucleotides
  • Condition chance: 46% (animals 54%)

IFITM3 Variant / CCR5-Rich T Cells

Helps you

+12% damage. Shown as CCR5-Rich T Cells when you play Retrovirus.

Details
  • Up to +38% at Prismatic
  • People only
  • Real world: a common IFITM3 variant is linked to severe flu, and extra CCR5 co-receptors give a retrovirus more ways in

TLR7 Deficiency

Helps you

Detection rises 20% slower.

Details
  • Up to 64% slower at Prismatic (never more than 70%)
  • Real world: TLR7 senses viral RNA; people missing it can't raise the alarm quickly

Ageing Immune System

Helps you

Immune cells move 8% slower.

Details
  • Up to 26% slower at Prismatic
  • Tokyo in Pandemic Game Mode can give it to every host
  • Real world: the immune system weakens with age

Smoker's Airways

Helps you

+7% move speed (damaged cilia).

Details
  • Up to +22% at Prismatic
  • People only
  • Real world: smoking paralyses the cilia that sweep viruses out of the airways

Lymphopenia

Helps you

Immune cells have 10% less HP.

Details
  • Up to 32% less at Prismatic
  • Real world: low lymphocyte counts leave fewer T and B cells to fight infection

Well-Fed Cells

Helps you

+15% nucleotides.

Details
  • Up to +48% at Prismatic
  • Real world: busy, nutrient-rich cells give a virus more raw material

Endogenous Viral Genes

Helps you

Start the run with a random trait of this genome's tier.

Details
  • The rarer the host, the better the free trait
  • Real world: about 8% of the human genome is old retrovirus DNA

Gene Therapy Patient

Helps you

CRISPR power-ups appear 60% more often.

Details
  • Up to 192% more often at Prismatic
  • People only; appears once Power-ups are unlocked

Strong p53 Gene

Helps you

Tumors grow 25% slower.

Details
  • Up to 75% slower
  • Appears once Tumors & Metastasis are unlocked
  • Real world: p53, 'the guardian of the genome', stops damaged cells dividing into tumors

Mineral-Rich Blood

Helps you

Elemental power-ups appear 40% more often.

Details
  • Up to 128% more often at Prismatic
  • Appears once Power-ups are unlocked

Prior Flu Immunity / CCR5-Δ32 Carrier

Fights you

−10% damage. Shown as CCR5-Δ32 Carrier when you play Retrovirus.

Details
  • Up to −32% at Prismatic (never worse than −50%)
  • People only
  • Real world: antibodies from past flu partly recognise new strains; the CCR5-Δ32 mutation blocks a retrovirus's way in

Strong HLA Match / HLA-B*57 Elite Controller

Fights you

Immune cells have +12% HP. Shown as HLA-B*57 Elite Controller when you play Retrovirus.

Details
  • Up to +38% at Prismatic
  • People only
  • Real world: some HLA types show viral pieces to T cells especially well

Athletic Host

Fights you

Immune cells move 8% faster.

Details
  • Up to 26% faster at Prismatic
  • People only
  • Real world: regular exercise boosts immune cell circulation

Up-to-Date Vaccines

Fights you

30% more elite cells.

Details
  • Up to 96% more at Prismatic
  • Appears once Elite Cells are unlocked; among animals, only on farm animals

Strong Fever Response

Fights you

Detection rises 20% faster.

Details
  • Up to 64% faster at Prismatic
  • Real world: fever slows viral replication and speeds up immune cells

Trained Immunity

Fights you

Immune cells hit 10% harder.

Details
  • Up to 32% harder at Prismatic
  • Istanbul in Pandemic Game Mode can give it to every host
  • Real world: vaccines like BCG 'train' innate immune cells for months

Thick Mucus (MUC5B)

Fights you

−8% max HP.

Details
  • Up to −26% at Prismatic (never worse than −50%)
  • Real world: a MUC5B variant makes extra mucus that traps invaders

Anti-CRISPR Proteins

Fights you

CRISPR power-ups wear off 15% sooner.

Details
  • Up to 48% sooner at Prismatic (never more than 60%)
  • Appears once Power-ups are unlocked

BRCA Mutation

Fights you

Tumors grow 30% faster and spread once more.

Details
  • Up to 96% faster at Prismatic
  • People only; appears once Tumors & Metastasis are unlocked

Antioxidant-Rich Diet

Fights you

Elemental power-ups wear off 15% sooner.

Details
  • Up to 48% sooner at Prismatic (never more than 60%)
  • Appears once Power-ups are unlocked

Bat Immune Tolerance

Animal signature

Immune cells hit 12% softer.

Details
  • Up to 38% softer at Prismatic (never more than 60%)
  • Carried by every Fruit Bat
  • Real world: bats dampen inflammation, so they carry viruses without getting sick

Mixing Vessel

Animal signature

40% more mutation orbs.

Details
  • Up to 128% more at Prismatic
  • Carried by every Pig and Seal; Nairobi's Livestock Markets in Pandemic Game Mode give it to every host
  • Real world: pig cells carry both bird- and human-type flu receptors, so strains can swap genes inside them

Avian α2,3 Receptors

Animal signature

+15% damage as Influenza A, −15% damage as any other virus.

Details
  • Up to ±48% at Prismatic
  • Carried by every Chicken, Mallard Duck, Herring Gull, Pigeon and Penguin

Udder Tissue Receptors

Animal signature

+20% nucleotides.

Details
  • Up to +64% at Prismatic
  • Carried by every Dairy Cow, Dromedary Camel and Llama

Canine Immunity

Animal signature

Immune cells have +10% HP.

Details
  • Up to +32% at Prismatic
  • Carried by every Dog: the one signature that always fights you

Big Deer Lungs

Animal signature

+8% move speed.

Details
  • Up to +26% at Prismatic
  • Carried by every White-Tailed Deer, Kangaroo and Reindeer

SIV Reservoir

Animal signature

+15% damage as Retrovirus, −15% damage as any other virus.

Details
  • Up to ±48% at Prismatic
  • Carried by every Chimpanzee, Macaque, Capuchin Monkey and Ring-Tailed Lemur

Host conditions

Host conditions

Some hosts live with a condition that bends the whole run, each with a big upside and a big downside. 22% of people have one (plus 4% per tier above Common) and 30% of animals (plus 4% per tier). People get human conditions, each species has its own diseases, and every animal can catch the general ones.

Type 1 Diabetes

People · Dogs

Sugary blood: +60% nucleotides and immune cells 15% slower. But rooms heal you 70% less.

Details
  • Found in people and dogs

Primary Immunodeficiency

People

Weak immune system: cells have 45% less HP, there are fewer of them and far fewer elites. But you earn 40% fewer nucleotides.

Details
  • 25% fewer cells per room
  • 60% fewer elite cells

Lupus (Autoimmune)

People

The immune system attacks itself: dying cells burst and hurt their neighbours, +50% nucleotides. But every cell starts alert and hits 30% harder.

Details
  • Lysis bursts only hurt cells, not you

Raging Fever

People

Everything runs hot: you fire 25% faster and move 20% faster. But cells move 30% faster and their shots fly 25% faster.

Details
  • Found in people

Sepsis

People · Animals

The body is overwhelmed: double nucleotides and 50% more mutation orbs. But 70% more cells per room and 2 extra rooms per area.

Details
  • Found in people, pigs, cows, chimpanzees, macaques, capuchins, lemurs, seals, camels, llamas and kangaroos

Sickle Cell Anemia

People

Sickled red cells: you move 20% faster and land 15% critical hits. But you have 30% less max HP.

Details
  • Found in people

Cystic Fibrosis

People

Thick mucus everywhere: cells move 30% slower and see 30% less far. But you move 15% slower too.

Details
  • Found in people

Chronic Stress & Insomnia

People

A stressed host: +50% nucleotides and 10% critical hits. But Detection starts at 30, rises 70% faster and barely cools.

Details
  • Detection cools 70% slower

Hemophilia

People

Blood won't clot: +40% damage. But clearing rooms never heals you.

Details
  • Found in people

Severe Allergies

People

Allergic overreaction: +80% nucleotides, double RNA, many more elites. But cells have 30% more HP and hit 20% harder.

Details
  • Twice as many elite cells

Severe Asthma

People

Narrowed airways: cells move 20% slower, +30% nucleotides. But you move 10% slower and there are more pits.

Details
  • 60% more pits

Post-Viral Fatigue

People

An exhausted immune system: cells have 20% less HP and hit 15% softer. But far fewer mutation orbs and RNA.

Details
  • Half as many mutation orbs and RNA drops

Metastatic Cancer

People

The host is riddled with cancer: every organ grows a tumor that starts a stage bigger, grows faster and spreads twice more. Tumors pay out triple and the run pays +30%.

Details
  • Tumors grow 50% faster
  • Appears once Tumors & Metastasis are unlocked (Level 7)

Chemotherapy

People

The drugs wipe out immune cells (30% less HP, hit 20% softer) and shrink tumors (they take 50% more damage). But they poison you too: −20% max HP.

Details
  • Found in people

Viral Co-infection

Any host

Another virus is already here: you start with a random trait of the host's genome tier. But the immune system is primed: cells have 15% more HP.

Details
  • The only condition people and every animal can have

White-Nose Syndrome

Fruit Bat

A fungus covers the bat: cells see half as far and +60% nucleotides. But you can only see a small circle around you.

Details
  • Fruit Bats only

Rabies

Bat · Dog · Deer · Reindeer

A rabid host: +30% damage. But every cell is already alert and moves 40% faster.

Details
  • Found in fruit bats, dogs, white-tailed deer and reindeer

Nipah Virus Carrier

Bat · Pig

Another virus lives here: you deal 15% less damage. But triple RNA and +50% nucleotides.

Details
  • Found in fruit bats and pigs

Hibernation Torpor

Fruit Bat

A hibernating bat: cells move half as fast and Detection rises half as fast. But the cold slows your fire rate 30%.

Details
  • Fruit Bats only

African Swine Fever

Pig

The pig's cells are dying: they have 35% less HP. But 60% more of them per room.

Details
  • Pigs only

Swine Flu H1N1

Pig

As Influenza A: pig flu to swap genes with, +35% damage and double mutation orbs. As any other virus: a competing flu, −20% damage but +20% nucleotides.

Details
  • Pigs only
  • Effect depends on your virus

Foot-and-Mouth Disease

Livestock

Blistered tissue: cells that touch you take 15 damage, +30% nucleotides. But you move 15% slower.

Details
  • Found in pigs, dairy cows, camels, llamas and kangaroos

Mad Cow Disease

Dairy Cow

Spongy, prion-riddled tissue: cells see 60% less far and Detection rises 60% slower. But the floor is full of holes.

Details
  • 2.5x as many pits
  • Dairy Cows only

Bovine Tuberculosis

Cow · Camel · Llama

Granulomas wall off infection: fewer cells, +60% nucleotides. But they have 40% more HP and elites are common.

Details
  • 20% fewer cells, 60% more elites
  • Found in dairy cows, camels and llamas

Marek's Disease

Chicken

Tumorous tissue everywhere: cells have 20% less HP, +40% nucleotides. But 3 extra rooms per area.

Details
  • Chickens only

Avian Influenza H5N1

Birds · Seal

+30% nucleotides either way. As Influenza A: another flu to swap genes with, +40% damage, but cells have 20% more HP. As any other virus: −25% damage, but cells have 20% less HP.

Details
  • Found in chickens, mallard ducks, herring gulls, pigeons, penguins and seals
  • Effect depends on your virus

Newcastle Disease

Chicken · Pigeon

Nervous-system damage: cells move 30% slower. But every cell is already alert.

Details
  • Found in chickens and pigeons

Fowlpox

Chicken

Pox lesions: cells have 30% less HP. But wounded cells slowly regenerate.

Details
  • Chickens only

Avian Botulism

Duck · Gull · Penguin

Paralysing toxin: cells move 45% slower. But you move 20% slower and fire 15% slower.

Details
  • Found in mallard ducks, herring gulls and penguins

Duck Plague

Mallard Duck

A haemorrhaging host: dying cells burst and hurt neighbours, +50% nucleotides. But the bursts can hurt you too.

Details
  • Mallard Ducks only

West Nile Virus

Duck · Gull · Pigeon

A mosquito-borne brain infection: double RNA, cells see 40% less far. But they hit 25% harder.

Details
  • Found in mallard ducks, herring gulls and pigeons

Oiled Feathers

Gull · Penguin

Slick feathers: you move 10% faster, dash 40% more often and enemy shots are 20% slower. But rooms heal you half as much.

Details
  • Found in herring gulls and penguins

Pigeon Paramyxovirus

Pigeon

A dizzy, twitching host: you move 25% faster and dash 40% more often. But enemy shots fly 30% faster.

Details
  • Pigeons only

Canine Distemper

Dog · Seal

Weakened by distemper: cells have 25% less HP. But dying cells burst and can hurt you.

Details
  • Found in dogs and seals

Canine Parvovirus

Dog

Parvovirus wrecked the gut: cells have 40% less HP. But you have 25% less max HP.

Details
  • Dogs only

Canine Influenza

Dog

As Influenza A: dog flu to mix with, you fire 25% faster and get +20% nucleotides. As any other virus: you fire 15% slower, but +30% nucleotides.

Details
  • Dogs only
  • Effect depends on your virus

Chronic Wasting Disease

Deer · Reindeer

A wasting deer: cells have 40% less HP. But you have 30% less max HP and cells hit 20% harder.

Details
  • Found in white-tailed deer and reindeer

Epizootic Hemorrhagic Disease

Deer · Reindeer

Haemorrhagic fever: dying cells burst and hurt neighbours, +40% nucleotides. But cells hit 25% harder.

Details
  • Found in white-tailed deer and reindeer

Deer Virus Reservoir

White-Tailed Deer

Another virus already here: −10% damage. But cells have 30% less HP and Detection rises 30% slower.

Details
  • White-Tailed Deer only

Simian Immunodeficiency

Primates

SIV already wrecked its defences: cells have 45% less HP and few elites. But you earn 20% fewer nucleotides.

Details
  • As Retrovirus you also deal +30% damage
  • 60% fewer elite cells
  • Found in chimpanzees, macaques, capuchin monkeys and ring-tailed lemurs

Filovirus Outbreak

Chimpanzee

The host is collapsing: 40% fewer cells with 30% less HP. But you have 25% less max HP and Detection starts at 40.

Details
  • Chimpanzees only

Mpox

Primates

Pox lesions: cells that touch you take 20 damage, 10% critical hits. But 30% more cells per room.

Details
  • Found in chimpanzees, macaques, capuchin monkeys and ring-tailed lemurs

Parasitic Worms

Any animal

Worms steal the host's food: cells have 30% less HP. But you earn 30% fewer nucleotides.

Details
  • Any animal can have it

Malnutrition

Any animal

A starving host: 30% fewer cells, and they're 10% slower. But you have 20% less max HP.

Details
  • Any animal can have it

Pneumonia

Any animal

Lungs full of bacteria: cells are distracted (see 40% less far), +30% nucleotides. But 40% more cells per room.

Details
  • Any animal can have it

Lyme Disease (Ticks)

Any animal

Tick-borne inflammation: 10% critical hits, +40% nucleotides. But wounded cells regenerate.

Details
  • Any animal can have it

Heat Stress

Any animal

An overheated host: you move 15% faster and dash 30% more often. But 15% less max HP and enemy shots fly 15% faster.

Details
  • Any animal can have it

Lead Poisoning

Any animal

Poisoned tissue: cells hit 25% softer and Detection rises 30% slower. But they have 25% more HP.

Details
  • Any animal can have it

Zoonosis

Animal hosts

Many viruses jump between species, and so can you. 19 animals live alongside people: about 1 run in 5 lands on one, and you infect it instead. Every animal carries its species' signature trait, has a slightly better shot at a rare genome, and is more likely to have a condition (30% plus 4% per tier).

Fruit Bat

Infect & Pandemic

Flies over forests and caves. Signature: Bat Immune Tolerance (immune cells hit 12% softer).

Details
  • Settings: deep forest, limestone cave
  • Pandemic Game Mode: Manaus, Lagos, Antananarivo, Sydney, Port Moresby; Manaus's Remote Rainforest adds two more
  • Own conditions: White-Nose Syndrome, Rabies, Nipah Virus Carrier, Hibernation Torpor

Dairy Cow

Infect & Pandemic

Grazes on farms. Signature: Udder Tissue Receptors (+20% nucleotides).

Details
  • Settings: farm
  • Pandemic Game Mode: Mumbai, Nairobi, Antananarivo; Nairobi's Livestock Markets put cows on every street
  • Own conditions: Mad Cow Disease, Sepsis, Foot-and-Mouth Disease, Bovine Tuberculosis
  • Farm animal: can carry Up-to-Date Vaccines

Pig

Infect & Pandemic

Found on farms. Signature: Mixing Vessel (40% more mutation orbs).

Details
  • Settings: farm
  • Pandemic Game Mode: added by Nairobi's Livestock Markets
  • Own conditions: African Swine Fever, Sepsis, Swine Flu H1N1, Nipah Virus Carrier, Foot-and-Mouth Disease
  • Farm animal: can carry Up-to-Date Vaccines

Chicken

Infect & Pandemic

Pecks around farms. Signature: Avian α2,3 Receptors (+15% damage as Influenza A, −15% as any other virus).

Details
  • Settings: farm
  • Pandemic Game Mode: Lagos, Nairobi, Antananarivo
  • Own conditions: Marek's Disease, Avian Influenza H5N1, Newcastle Disease, Fowlpox
  • Farm animal: can carry Up-to-Date Vaccines

Dog

Infect & Pandemic

Walks in cities, parks and on trails. Signature: Canine Immunity (immune cells have +10% HP).

Details
  • Settings: downtown, city park, mountain trail
  • Pandemic Game Mode: 25 cities, from New York and London to Lagos and Perth
  • Own conditions: Rabies, Canine Distemper, Canine Parvovirus, Canine Influenza, Type 1 Diabetes
  • The only animal whose signature always fights you

Mallard Duck

Infect & Pandemic

Paddles on lakes, rivers and park ponds. Signature: Avian α2,3 Receptors (+15% damage as Influenza A, −15% as any other virus).

Details
  • Settings: city park, lake, riverbank
  • Pandemic Game Mode: Vancouver, El Paso, Madrid, Baghdad, Buenos Aires, Auckland, Perth
  • Own conditions: Avian Influenza H5N1, Avian Botulism, Duck Plague, West Nile Virus

White-Tailed Deer

Infect & Pandemic

Wanders forests, trails and riverbanks. Signature: Big Deer Lungs (+8% move speed).

Details
  • Settings: deep forest, mountain trail, riverbank
  • Pandemic Game Mode: Vancouver, Novosibirsk
  • Own conditions: Chronic Wasting Disease, Rabies, Epizootic Hemorrhagic Disease, Deer Virus Reservoir

Herring Gull

Infect & Pandemic

Glides over boats, ships and lakes. Signature: Avian α2,3 Receptors (+15% damage as Influenza A, −15% as any other virus).

Details
  • Settings: lake, fishing boat, cruise ship deck
  • Pandemic Game Mode: Los Angeles, Vancouver, Nuuk, Venice, Istanbul, Dubai, Cape Town, Sydney, Auckland
  • Own conditions: Avian Influenza H5N1, Avian Botulism, West Nile Virus, Oiled Feathers

Chimpanzee

Infect

Lives in the deep forest. Signature: SIV Reservoir (+15% damage as Retrovirus, −15% as any other virus).

Details
  • Settings: deep forest
  • Own conditions: Simian Immunodeficiency, Sepsis, Filovirus Outbreak, Mpox

Pigeon

Infect & Pandemic

Pecks around city streets and parks. Signature: Avian α2,3 Receptors (+15% damage as Influenza A, −15% as any other virus).

Details
  • Settings: downtown, city park
  • Pandemic Game Mode: 21 cities, including New York, Tokyo, Venice, Mumbai and Cairo
  • Own conditions: Pigeon Paramyxovirus, Avian Influenza H5N1, West Nile Virus, Newcastle Disease

Penguin

Infect & Pandemic

Waddles around polar research stations. Signature: Avian α2,3 Receptors (+15% damage as Influenza A, −15% as any other virus).

Details
  • Settings: polar research station
  • Pandemic Game Mode: Cape Town, McMurdo Station, Esperanza Base
  • Own conditions: Avian Influenza H5N1, Avian Botulism, Oiled Feathers

Seal

Infect & Pandemic

Hauls out at polar stations and cold harbours. Signature: Mixing Vessel (40% more mutation orbs).

Details
  • Settings: polar research station
  • Pandemic Game Mode: Nuuk, Cape Town, McMurdo Station, Esperanza Base
  • Own conditions: Avian Influenza H5N1, Canine Distemper, Sepsis

Dromedary Camel

Pandemic

Walks the streets of desert cities. Signature: Udder Tissue Receptors (+20% nucleotides).

Details
  • Pandemic Game Mode: Riyadh, Dubai, Cairo; Riyadh's Camel Milk Stalls add two more
  • Own conditions: Sepsis, Foot-and-Mouth Disease, Bovine Tuberculosis
  • Real world: the reservoir of the MERS coronavirus

Kangaroo

Pandemic

Grazes in Perth's parks. Signature: Big Deer Lungs (+8% move speed).

Details
  • Pandemic Game Mode: Perth
  • Own conditions: Sepsis, Foot-and-Mouth Disease

Macaque

Pandemic

Roams Mumbai and Singapore. Signature: SIV Reservoir (+15% damage as Retrovirus, −15% as any other virus).

Details
  • Pandemic Game Mode: Mumbai, Singapore
  • Own conditions: Simian Immunodeficiency, Sepsis, Mpox

Capuchin Monkey

Pandemic

Swings through the rainforest around Manaus. Signature: SIV Reservoir (+15% damage as Retrovirus, −15% as any other virus).

Details
  • Pandemic Game Mode: Manaus
  • Own conditions: Simian Immunodeficiency, Sepsis, Mpox

Llama

Pandemic

Grazes along the trails above Lima. Signature: Udder Tissue Receptors (+20% nucleotides).

Details
  • Pandemic Game Mode: Lima
  • Own conditions: Sepsis, Foot-and-Mouth Disease, Bovine Tuberculosis

Ring-Tailed Lemur

Pandemic

Found around Antananarivo. Signature: SIV Reservoir (+15% damage as Retrovirus, −15% as any other virus).

Details
  • Pandemic Game Mode: Antananarivo
  • Own conditions: Simian Immunodeficiency, Sepsis, Mpox

Reindeer

Pandemic

Wanders near Nuuk. Signature: Big Deer Lungs (+8% move speed).

Details
  • Pandemic Game Mode: Nuuk
  • Own conditions: Chronic Wasting Disease, Epizootic Hemorrhagic Disease, Rabies

Conditions every animal can catch

All animals

On top of its own diseases, any animal can have Parasitic Worms, Malnutrition, Pneumonia, Lyme Disease, Heat Stress, Lead Poisoning or a Viral Co-infection.

Details
  • Beijing's Zero-Tolerance Policy in Pandemic Game Mode clears every animal off the street
  • The Antarctic stations at Vostok and the South Pole have no animals

Next up

Gear & Store

Five slots, seven rarities, sets, enhancing, combining and mutations.