Arma Reforger · Workshop add-on · version 2.4.20

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 46,447 Rating 96% from 101 ratings Game 1.9.0.37 Size 201 MB Licence APL Updated 2026-11-08

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 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
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
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.

23Workshop items197,193downloads 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 · 113,342 downloads

Scenarios

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

2 items · 1,046 downloads

Creatures

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

11 items · 15,266 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.

v1.0.82,494 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.

v1.2.82,204 downloads100% of 9 ratings
checking servers
Creatures

Mushroom Rift

Fungal organisms have been reported near settlements and abandoned ground. Small clawed forms travel in groups, while larger bodies stand above the canopy and release others from their tissue.

v0.1.82,099 downloads100% of 18 ratings
checking servers
Creature

Lumenkin

A 21-metre creature with four flexible spotlight heads, a red target warning and heavy Titan footfalls. Early work in progress. Requires Creature Melee AI.

v0.1.51,606 downloads100% of 8 ratings
checking servers
Creature

Teuthisan

A crawling forest predator with caustic spit and tree ambushes. Includes Game Master groups of 4 and 16. Early work in progress; requires Creature Melee AI.

v0.1.5899 downloads100% of 4 ratings
checking servers
Creature

Werewolf

Grey, Brown, Dark and Ice Werewolves for the Creatures collection, with custom movement, claw attacks and positional sound effects. Requires Creature Melee AI.

v0.1.51,316 downloads100% of 8 ratings
checking servers

Foundation and tools

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

4 items · 67,539 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.

v1.8.2355,994 downloads100% of 14 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.

v1.0.24,843 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 2.4.20 · 2026-11-08

    Project Outbreak Deadwood Lite v0.1.19 · 2026-11-08

    Fixed the score bar showing 4 control points to win when the server sets another number. Players now see the number the server plays to.

    Full history on the Workshop

    Creature Melee AI v1.8.23 · 2026-11-08

    Fixed players remaining grounded or stuck in a pose after zombie tackles on Arma Reforger 1.9. Update Creature Melee AI on clients and servers.

    Full history on the Workshop

    Mushroom Rift v0.1.8 · 2026-11-07

    Paired with the updated Creature Melee AI to fix Mycelial Empyrean getting stuck after a player-controlled stomp on Arma Reforger 1.9.

    Full history on the Workshop

    Werewolf v0.1.5 · 2026-11-07

    Fixed Werewolves freezing after howling and other finite actions on Arma Reforger 1.9. Update Creature Melee AI as well.

    Full history on the Workshop

    AI Rearm v1.0.2 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Keeps the current gameplay, corrects the mission-settings prefab structure, and removes development-only editor tools from the download.

    Full history on the Workshop

    Military Crossbow v0.2.2 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Ballista Turret WIP v0.1.3 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Special Zombies and Creatures v1.1.7 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Project Outbreak Variety v1.2.7 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Project Outbreak Gadgets v1.2.6 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Project Outbreak Breach v1.3.6 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Project Outbreak Infection v1.4.4 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Maulkin v0.1.2 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Lumenkin v0.1.5 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Harlequin v0.1.4 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Warbeasts v1.0.8 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Goblin Swordsman v0.1.5 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Bigfoot v0.1.6 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Eyekin v1.2.8 · 2026-11-06

    Compatibility update for Arma Reforger 1.9. Game content is unchanged.

    Full history on the Workshop

    Teuthisan v0.1.5 · 2026-11-05

    Arma Reforger 1.9 update: the Teuthisan works on game version 1.9 again. Version 1.9 adds a game class whose name clashed with one of the Teuthisan's animation helpers, so every game or server with the Teuthisan loaded failed to start. Update Creature Melee AI to 1.8.18 as well. Nothing else changed.

    Full history on the Workshop

    Grimdark Horde v0.1.9 · 2026-11-05

    Arma Reforger 1.9 update: Grimdark Horde works on game version 1.9 again. Version 1.9 changed a game function that the orcs' melee recovery builds on, so every game or server with Grimdark Horde loaded failed to start. Update Creature Melee AI to 1.8.18 as well. Nothing else changed.

    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
    2.4.202026-11-081.9.0.37201 MB
    2.4.192026-11-081.9.0.37201 MB
    2.4.182026-11-061.9.0.37201 MB
    2.4.172026-11-061.9.0.37201 MB
    2.4.162026-11-051.9.0.37201 MB
    2.4.152026-11-041.8.0.13201 MB
    2.4.142026-11-041.8.0.13201 MB
    2.4.132026-11-021.8.0.13201 MB
    2.4.122026-10-251.8.0.13200 MB
    2.4.102026-10-241.8.0.13200 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.