Arma Reforger · Workshop add-on · version 2.3.4

Project Outbreak

A custom zombie sandbox including slow, fast, and crawling Zombies. Place them through Game Master, or let ambient populations and directed waves shape an entire scenario.

Downloads 30,988 Rating 97% from 87 ratings Game 1.8.0.13 Size 199 MB Licence APL Updated 2026-10-14

On servers right now

Counted every hour from the public Arma Reforger server list by the Outbreak Server Watch, with data from ReforgerMods.net and ArmaHQ. Players are the people on servers running the add-on, not subscribers.

Servers running it
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Players on them
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Workshop downloads
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Rank among zombie mods
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The infected

Three archetypes ship in the core add-on, each with its own animations and behaviour, in civilian and military dress. Health and damage are yours to tune. Hover a card to see the other outfit.

Shambler card art
Slow

Shambler

The slow archetype. Numbers over speed: the wall that keeps coming while you reload.

Sprinter card art
Fast

Sprinter

The fast archetype. Closes distance in seconds and tackles what it catches.

Feral card art
Crawling

Feral

The crawling archetype. Low, quick and hard to spot in cover and crops.

Built for Game Master

Everything is placeable and configurable from the Game Master interface, on your own scenarios and servers.

  • Place them directlySingle creatures and groups of four, eight or sixteen, plus a mixed horde card, straight from the Outbreak faction in Game Master.
  • Ambient populations and directed wavesLet the sandbox populate itself, or author waves and routes to drive a whole scenario.
  • Zombie Permanent KillsA global setting. In the headshots, explosives and fire mode, ordinary body damage only knocks zombies down; a headshot, an explosion or fire finishes them. Works with ACE Medical hit-zone mods.
  • Placing ignores AI limitOff by default. Turn it on to keep placing creatures by hand after the active-AI budget is full; ambience, directed spawning and reanimation keep their own budgets.
  • Downed is not safeZombies feed on knocked-out survivors, more than one at a time, and finish them unless someone drives them off or revives them.
The Outbreak Director card art
The Outbreak Director, as it appears in Game Master

From the field

Screenshots from the Workshop listing. Select one to see it full size.

A horde pours through a fence line toward a sandbagged position between two bunkers
A horde pours through a fence line toward a sandbagged position between two bunkers
A dozen infected in torn civilian and military clothes walk through a wheat field
A dozen infected in torn civilian and military clothes walk through a wheat field
Night rain at a checkpoint: soldiers behind sandbags and a turret gunner fire into an advancing crowd
Night rain at a checkpoint: soldiers behind sandbags and a turret gunner fire into an advancing crowd
Workshop title art: the Outbreak biohazard mark over a crowd of infected walking into the fire. Art by redeye.vol2
Workshop title art: the Outbreak biohazard mark over a crowd of infected walking into the fire. Art by redeye.vol2

Everything by Project Outbreak

Every public Workshop item from the same author, from the zombie sandbox to stand-alone creatures. Each card shows its live server count from the Outbreak Server Watch.

16Workshop items115,465downloads between themCompare them on the server watch

Project Outbreak

The zombie sandbox and its optional modules. Start with the core add-on, then add what your scenario needs.

6 items · 72,922 downloads

Scenarios

Ready-to-host multiplayer scenarios that run Project Outbreak for you.

2 items · 406 downloads

Creatures

Stand-alone creature add-ons, each built on Creature Melee AI.

4 items · 2,808 downloads
Creatures

Warbeasts

Witnesses report horned humanoids carrying paired axes, alongside heavier fist-fighting forms. Their equipment varies from bone tools to scavenged military kit, a white vest and denim.

v1.0.3866 downloads100% of 11 ratings
checking servers
Creature

Eyekin

Pale, one-eyed organisms strike with claws and charged eye beams. A many-eyed Titan towers over settlements, while the winged form hunts from above and carries people away.

v1.2.4988 downloads100% of 6 ratings
checking servers

Foundation and tools

The melee AI framework under every creature here, plus AI support and weapons.

4 items · 39,329 downloads
Foundation, required

Creature Melee AI

Shared creature AI for Arma Reforger: hostile targeting, pursuit, melee, carry support and reusable animations. Includes authoring templates and optional Game Master examples.

v1.8.633,771 downloads100% of 11 ratings
checking servers
Standalone

AI Rearm

AI Rearm lets AI request magazines from squadmates, recover compatible ammunition from allowed dead bodies, and visit arsenals. A placeable Game Master settings system controls settings.

v1.0.14,141 downloads100% of 22 ratings
checking servers

What changed

Published change notes, straight from the Workshop. Other add-ons are listed by their latest update.

Project Outbreak Zombies 2.3.4 · 2026-10-14

    Eyekin v1.2.4 · 2026-10-18

    The bird's dive now grabs only the person its talons actually hit - a nearby stander can no longer be snatched instead, and nothing locks a person's controls before the talons strike. Requires Creature Melee AI 1.8.6.

    Full history on the Workshop

    Creature Melee AI v1.8.6 · 2026-10-18

    Adds an internal carry admission path used by creature add-ons that have already proved physical contact with the body they struck, such as the Eyekin bird's dive grab. Creature and player behaviour through the existing pickup search is unchanged.

    Full history on the Workshop

    Project Outbreak Deadwood Lite v0.1.5 · 2026-10-10

    Active mass graves can now spawn the Abomination on servers that load Special Zombies and Creatures. Each grave has a 1% chance per minute, with at most one Abomination alive across the valley. It follows the existing lure, population limit and idle cleanup rules. The creature addon remains optional; Lite's required dependencies and other infected spawn chances are unchanged.

    Full history on the Workshop

    Warbeasts v1.0.3 · 2026-10-09

    Greenskin gains a broad jaw, flat nose, lower tusks, a heavier brow and leathery green hide. Fuller cheeks, softer facial creases and smoother face-to-neck skin transitions give it a more natural appearance. Removed its old crown and back spikes. The original Warbeast and Warchief remain available.

    Barefoot Warbeast and Warchief no longer injure their feet while walking or running with the updated Creature Melee AI dependency.

    Warbeast, Warchief and Greenskin now have health sliders in the shared Creatures settings of Game Master global attributes.

    The shared Creatures faction label now keeps the standard Game Master faction setup, so it works better with other mods that add factions. Requires Creature Melee AI 1.8.0.

    Adds Squidbeast and Big Jim to the Creatures roster. Squidbeast uses the original mottled hide; Big Jim has orange hide, a white vest, denim and a larger body. Both use fist and smash attacks, creature voices and native turning.

    Full history on the Workshop

    Project Outbreak Infection v1.3.1 · 2026-10-09

    Infection stage popups are off by default. Game Masters and server owners can enable them with Show Symptom Alerts or outbreak.json. Examination, diagnosis and treatment feedback remain available.

    When symptom alerts are enabled, the risen notification now reaches the original player after their old body reanimates. Includes updated Workshop information and component licence clarification.

    Full history on the Workshop

    Military Crossbow v0.2.1 · 2026-10-09

    Fixes the sideways first-person crossbow after drawing or equipping it. Keeps the flat back placement, vanilla draw/restow, front quiver reload, palm-down single-bolt reload, fitted inspections, finishes and FIRE/HE ammunition. Standalone: no other Workshop addon required.

    Full history on the Workshop

    Special Zombies and Creatures v1.1.3 · 2026-10-06
    • New Nightingale cries, screams and death sounds.
    • Balanced the loudness of individual takes within each voice type.
    • Added Nightingale swing sounds. Her horde-calling scream keeps its existing behavior.

    Full history on the Workshop

    Project Outbreak Variety v1.1.0 · 2026-10-06
    • Added a decayed female firefighter with repaired worn gear, finer hair, a readable FIRE helmet badge, fitted straps and a weathered breathing tank.
    • A direct bullet hit on her breathing tank releases one short-range pressure blast that damages nearby characters, with a bang, air, dust and small cosmetic chips, without flames. It is designed to happen once per tank. Hits to the rest of the body do not trigger it, and the cylinder stays attached and visually intact afterward.

    Full history on the Workshop

    Project Outbreak Breach v1.3.2 · 2026-10-03
    • Breach allows zombies to finish a wall approach or active climb.
    • Zombies can open a usable door in either direction before breaching it.

    Full history on the Workshop

    Ballista Turret WIP v0.1.2 · 2026-10-01

    Bigger bolts and a heavier sound.

    • Increased ballista bolt damage by 1,000x, from 250 to 250,000. A successful hit can now kill the supported dragon in one shot.
    • Added heavier release, winding and impact sounds for both mounts.
    • AI gunners now hold a usable ballista station during combat instead of repeatedly walking away. Casualties and explicit exit orders still work normally.

    The classic and modern military mounts both use these changes. Still WIP; multiplayer presentation and full-range crew posture need further testing.

    Full history on the Workshop

    Project Outbreak Gadgets v1.2.2 · 2026-10-01
    • Hotfix for Electric fence sections causing crash.
    • Fixed a false warning from the Defense Supplies crate’s stock check.
    • Fixed errors during napalm cleanup when burned zombies disappear. The flames and burned appearance stay the same, with less background work. It should be faster now!

    Full history on the Workshop

    Project Outbreak Deadwood v0.1.2 · 2026-10-01

    Taking a district stops its local infected reinforcements; roaming infected can still enter. Graves stop preparing new waves when an attack ends. Nearby infected remain, while abandoned groups clear after everyone leaves. The compact campaign map keeps bases and relays, with field orders in the journal. Joining screens show US Army Remnants. Enemy score icons and flags use the black-and-red Outbreak banner. Infection and Ambience opening overlays default to off. Selected barriers have openings while surrounding fence runs remain. Tunnels have been updated, but zombie movement and spawning underground are still under testing and are not yet reliable.

    Full history on the Workshop

    VersionPublishedGameSize
    2.3.42026-10-141.8.0.13199 MB
    2.3.32026-10-141.8.0.13199 MB
    2.3.22026-10-131.8.0.13199 MB
    2.3.12026-10-091.8.0.13199 MB
    2.3.02026-10-061.8.0.13199 MB
    2.2.02026-10-031.8.0.13205 MB
    2.1.32026-10-011.8.0.13194 MB
    2.1.22026-10-011.8.0.13194 MB
    2.1.12026-09-291.8.0.13194 MB
    2.1.02026-09-291.8.0.13194 MB

    Credits and licence

    Who made what, and the licences that apply.

    LicenceOriginal Project Outbreak content is released under the Arma Public License (APL). Incorporated assets remain under the Fab Standard License.
    Animation and soundSeveral attack and tackling animations and sounds come from Yummy Games. Feral movement uses Crawling Ghoul Anims by RamsterZ. The Gadgets spear movement is adapted from work by Bacengdu.
    DependencyRequires Creature Melee AI by the same author. Arma Reforger, Enfusion and Workbench are by Bohemia Interactive.
    Not affiliatedProject Outbreak is an unofficial community project and is not endorsed by Bohemia Interactive. Server numbers on this site come from ReforgerMods.net and ArmaHQ, through the Outbreak Server Watch.