Zombie Infection

This article is about the official game mode. For community versions with a similar name and concept, see Zombie game mode.

Murky's swamp town.

“

Back from zhe dead! Click to listen — The Medic

”

Zombie Infection is a community-created game mode added in Scream Fortress XV with the October 9, 2023 Patch. It features the RED team (also referred to as "Humans" or "Survivors") fighting to survive against the undead hordes of BLU team Zombies.

Gameplay

At the start of a round, all players begin on RED team and are given a small period of time to prepare their defenses. After a short countdown, a certain number of players based on the amount of players on RED team are randomly chosen to become infected. If a RED player dies, they are moved to the BLU team and play as a Zombie. BLU team wins if they manage to infect all Humans, while RED team wins if the remaining Humans hold out long enough without all being infected.

Humans

• When there are 3 Humans left, all surviving Humans deal mini-crit damage. When there is 1 Human left, the last surviving Human deals full critical hits.

Weapon modifications

•   Demoman shields give a 50% damage resistance against Zombie attacks.
•   The Huntsman and Fortified Compound deal double damage.
•   The Crusader's Crossbow deals triple damage.
•   Heavy's Miniguns have a 40% damage penalty.
•   Sentry Guns deal 40% less damage.

Zombies

• Zombies are mostly limited to only using melee attacks, however, each Zombie class features a unique ability or passive.
• Zombies cannot deal Critical hits, pick up Ammo or Health packs (unless on fire), and do not drop ammo on death (except for the Engineer if he has an unused EMP grenade).
• Zombies never take fall damage.
• Except for Heavy and Scout Zombies, if a Zombie is not considered in combat, they receive a small movement speed speed buff. This goes away after hitting a Human or being hit by a Human.
• All Zombies wear a Voodoo-Cursed Soul, have a green footstep Halloween Spell effect, and have a voice modifier applied that deepens their voice.
• Zombies explode on death and drop a small health kit.

Zombie abilities

Class	Abilities	Cooldown	HUD icon
Zombie Scout	Speed Demon   Passive: 75% faster movement speed (520 Hu/s) and 25% extra jump height.   Passive: Triple jump.   Passive: 50 less max health (75 total max health).	N/A
Zombie Soldier	Pounce   Ability: Leap into the air, in the direction the player is looking. Landing on a player's head results in a stomp similar to the Mantreads.   This leap counts as blast jumping.   Passive: 25 extra max health (225 total max health).	5 seconds
Zombie Pyro	Dragon's Breath   Ability: Shoot a Dragon's Fury fireball. The initial cast of the fireball can reflect projectiles and airblast enemies.   Passive: Immunity to all flames and liquids. Explodes upon death and knocks back enemies in a 125 Hammer unit radius.   Passive: Every hit ignites Humans for a total of 3 seconds, dealing 8 damage per second. Burning enemies take Mini-Crits.   Passive: On death, no health kit is dropped.   Passive: 75 extra max health (250 total max health).   Passive: 30% damage penalty.	5 seconds
Zombie Demoman	Blast Charge   Ability: Explosive Charge, similar to the Charge when wearing a shield, dealing 275 damage in a 150 Hammer unit radius.   The player is ÜberCharged and made immobile for a short time before the charge.   Passive: 25 extra max health (200 total max health).	6 seconds
Zombie Heavy	The Tank   Passive: Deals 220% damage, immune to knockback, 35% damage resistance, 50% resistance to Sentry Gun damage, and increased knockback dealt.   Passive: Instantly destroy buildings in a single hit.   Passive: 225 extra max health (525 total max health).   Passive: 10% slower move speed (207 Hu/s).   Passive: Drop a medium health kit upon death.	N/A
Zombie Engineer	EMP Grenade   Ability: Throw an EMP bomb, temporarily disabling any buildings for 6.5 seconds and doing 110 damage after 3.5 seconds in a 500 Hammer units radius.   EMP explosion shakes the screen of players near it.   Passive: 25 extra max health (150 total max health).   Passive: If an Engineer dies with an unused EMP grenade, he drops a medium ammo pack.	9 seconds
Zombie Medic	Heal   Ability: Heals and ÜberCharges himself and teammates in a 275 Hammer units radius around him. Cannot attack while using this ability.   The healing and ÜberCharge effect is identical to the Overheal magic spell.   Forces the player into a third person perspective when used.   Passive: Heal nearby teammates passively.   Passive: 25 extra max health (175 total max health).	7 seconds
Zombie Sniper	Spit   Ability: Spit an acid ball that, when it lands, damages any Human and building that stands on it. The acid deals fire damage, which melts the Spy-cicle, and deals half damage to buildings.   The initial acid ball hit deals 45 damage and the acid pool deals 25 damage per tick (50 damage per second) and stays for 5 seconds. Standing on the acid as a Human shows a green burning overlay on the HUD.   The acid pool has a 130 Hammer unit radius.   The acid ball can be held for a maximum of 5 seconds.   Passive: Drop a pool of acid on death.   Passive: 25 extra max health (150 total max health).	10 seconds
Zombie Spy	Reveal   Ability: Mark Humans in a radius around the player, revealing their location with an outline.   Reveal has a radius 1000 Hammer units and reveals Humans for 20 seconds.   Passive: Automatically cloak. Attacking or using Reveal uncloaks the Zombie Spy for 3 seconds.   Passive: 25 extra max health (150 total max health).	10 seconds

Strategy

Main article: Community Zombie Infection strategy

Maps

See also: List of maps

Zombie Infection maps carry the zi_ prefix; community maps are identified with an italic font.

Update history

October 9, 2023 Patch #1 (Scream Fortress 2023)

• Added maps: Atoll, Devastation, Murky, Sanitarium, and Woods.

Bugs

• Afterburn caused by the Pyro Zombie's on-hit ignite does not trigger hitsounds.

Unused content

• Zombies under the effect of Jarate were originally meant to take Critical Hits instead of Mini-Crits, as suggested by some commented out code.

Gallery

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  First person view for the Scout Zombie.

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  First person view for the Soldier Zombie.

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  First person view for the Pyro Zombie.

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  First person view for the Demoman Zombie.

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  First person view for the Heavy Zombie.

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  First person view for the Engineer Zombie.

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  First person view for the Medic Zombie.

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  First person view for the Sniper Zombie.

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  First person view for the Spy Zombie.

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  The EMP grenade used by the Engineer Zombie.