OPENZ Models & credits
Issue #51 · v0.4 · Free

OPENZ

Cooperative survival. Trimble County is lost.

An open world overrun by the infected, from the Church Lazarus camp to the sewers of City Center. Scavenge, drive, shoot, bleed, and come back the next day. Alone if you must, together if you can.

Development build, distributed free for testing and feedback. Windows 10/11, Android 8+ (arm64).

18+ Mature content: graphic violence, gore, infected that bleed, bite and do not stop. Not for kids.

What's in the box

  • One county: towns, farms, forest, an airport, sewers
  • 1 350 vehicles parked where they died
  • 64 modern firearms, with muzzle flash
  • Hordes, weather, fog, snow, rain
  • Voice chat, co-op, PvP, a GPS watch
“Lost a car in a ditch? Come back tomorrow. It'll still be there. So will they.”
15.10.2026 · update 51

Latest dispatch

  • A whole island. 12 farms with quests, 13 villages, cabins under siege, a downed helicopter.
  • Trees in the wind. They sway with the weather.
  • Remade. Weapons, outfits, props, vehicles and zombies.
  • Guns held right. Finger on the trigger, muzzle flash at the end of the barrel.
  • Full-auto and melee strike. Rifles fire full-auto, and you can hit with the gun in your hands.
  • Cars that drift. They follow bumps and slopes, and slide on the handbrake.
Full patch notes on Discord →

Watch

Latest videos
Live on Twitch
Church Lazarus, the camp on the water
Church Lazarus, the camp on the water
A street under the trees, pack on, gun out
A street under the trees, pack on, gun out
The cemetery. They heard you.
The cemetery. They heard you.
The GPS watch and the county map
The GPS watch and the county map
City Center across the water
City Center across the water
Android: touch controls, same world
Android: touch controls, same world

The County

VROOM

Drive anything

Cars, pickups, buses, army trucks, boats, a helicopter, a plane, and horses. Seats for your friends, fuel to find, doors that swing, bodywork that dents, engines that smoke and burn. Leave the wheel: your passengers stay in.

1 350 vehicles on the map

BLAM

Modern firearms

Pistols, rifles, snipers, shotguns with real spread, a bazooka. Aim down sights, automatic fire, ammo that runs out, impact marks on walls and cars. Fire from the passenger seat of a moving truck.

64 weapons

GRRAAH

They come in groups

The infected hunt in packs, hear your engine, follow your noise and surround you. Every wound bleeds and leaves a trail. Bandage, or die slowly.

Hordes · bleeding · gore

DRIP

Weather that matters

Fog rolls off the lakes and through the forest after the rain. Snow settles and melts. Puddles form. Night is dark. Your headlights are a beacon for everything out there.

Fog · rain · snow

KRAK

Scavenge and settle

Pick locks, search wrecks, loot 2 600 small places and stranded boats. Claim an apartment. Level up: experience, attributes, skills, shared with your group.

Side quests · lockpicking · levels

COPY?

Together, or against

Built for multiplayer from the ground up. Voice chat in-game, team groups, a GPS watch to find each other, a PvP mode when the living are the problem.

Official server · voice · PvP

Get in

Windows

Download
openz-launcher.exe, a small installer. It downloads the game: 1.7 GB (4.3 GB installed).
System
Windows 10 or 11, 64-bit, 8 GB RAM, a GPU with OpenGL 3
Version
0.4, update 51
  1. Run openz-launcher.exe and pick a folder. It downloads the game once.
  2. Every launch, it fetches the latest update by itself, then starts the game.
  3. Pick the official server in the browser, make a character, survive the intro.
Download the launcher

Android

Download
OpenZ.apk, 21 MB. The app then downloads 1.1 GB of game data (3 GB installed).
System
Android 8 or later, 64-bit (arm64), 4 GB RAM. Touch controls, or a gamepad.
Version
0.4, young port: expect rough edges
  1. Download OpenZ.apk, allow installs from unknown sources, then open it.
  2. First launch: the installer downloads the data. It resumes if the connection drops.
  3. Same server, same world as the PC players.
Download OpenZ.apk

The survivors

JOIN US

Bugs, screenshots, server news, update announcements, and the people who will drive you into a ditch. Everything happens on Discord.

Open the Discord

Official server · EU · 24/7

FREE. NOTHING SOLD.

OpenZ is a free development build, for testing and feedback. It stays free until every licence is cleared. There is no paid version, no paid access, no paid content.

If you want to help cover what it costs to make (the server, the tools, the late nights), you can send a voluntary donation. It gives you nothing extra in the game, and it never will.

Support the project