Project zomboid Build 42-13 Released Multiplayer Support and Much More

Thursday, December 11, 2025 at 12:33 PM

Project Zomboid: Multiplayer is back! Unstable Build 42.13 now available on our hosting

Today the developers of Project Zomboid released Unstable Build 42.13, which finally brings back multiplayer support. The update is currently in the Unstable branch, but you can already deploy a server on our hosting and test all the new features with your friends.

You can order a Project Zomboid game server here: https://xlgames.gg/games/projectzomboid

Key things to know about Unstable Build 42.13

Multiplayer is WIP and has been released mainly for stress testing. Crashes, bugs and wipes are possible.
It is strongly recommended to play on whitelisted servers or via Steam co-op for a more stable experience.
Currently it is not advised to run servers with 50+ players – for now the devs recommend staying around ~20 players per server. Performance and optimization will improve in future patches.
Do not use debug mode during MP sessions as it can severely impact server performance.
All mods (including client-side) should be disabled for now, until mod authors update their work for this version.
Old saves are not compatible – saves created before Unstable 42.13 may be corrupted by the conversion process. Make sure to back up your saves.
Ragdoll functionality is temporarily disabled in MP and will be reintroduced in later patches.
Future updates to the Unstable branch may break current MP worlds, so be prepared for this if you run a server for friends or a community.

Order a Project Zomboid server with Unstable 42.13: order your server

Unstable branch already available in the XLGAMES control panel

On our hosting you can select the Unstable branch directly in the control panel when installing or reinstalling a Project Zomboid server. There is no need to manually configure Steam beta branches – everything is handled automatically.

Key advantages of running Project Zomboid on XLGAMES:

Easy-to-use control panel – start, restart, change maps and versions, edit configs in just a few clicks.
One-click mod installation – simply choose the mods you want and the system will download and enable them (as soon as mod authors update for 42.13).
Full FTP access – easily move saves, logs, configs and mods, download your data to your PC or upload your own pack.
Automatic server setup – installation takes just a few minutes, no need to deal with SteamCMD or the console.
DDOS protection and stable infrastructure – your server stays online during the most intense moments.

Ready to configure your own world? Create your Project Zomboid server with us and choose the Unstable branch in the version list.

About Project Zomboid

Project Zomboid is a deep isometric zombie survival sim where the central question is: “How will you die?”. The game focuses on realism, atmosphere and difficulty, and every decision you make affects your chances to survive another day.

Main features:

Hardcore survival: hunger, thirst, sleep, injuries, infections, stress and depression – all of it matters.
Advanced looting and crafting: from simple boards and nails to proper bases, farms and electrical systems.
Flexible difficulty and custom scenarios: tailor the world and rules to suit your style.
Multiplayer: survive together, build bases, share loot – or cause chaos. It all depends on your group.
Active modding scene: hundreds of mods add weapons, maps, professions, systems and more.

With the release of Unstable Build 42.13 multiplayer returns to the spotlight, making it the perfect time to spin up your own server, gather your friends and see how long you can last in the new cycle of survival.

You can deploy a Project Zomboid server with Unstable 42.13 right now here: https://xlgames.gg/games/projectzomboid