Game Feed

Build 42.21 Stable Released

by AmazingSully

We released 42.21 into our Unstable beta last Wednesday, and extend our thanks to the community for checking it over and kicking the tires! If you’ve just seen your game updating and want to know what’s new, then read on below. Full patchnotes however can be found here. Going forward, this should be the standard procedure for all releases; a new update goes to Unstable, it’s tested by you, we potentially make more changes, and ultimately the release goes to Stable. In this instance the community did not report any major issues, so the ‘Go’ button is being pressed… today. Main Stuff • We have tackled the worst offending bugs when it came to issues of zombie duplication in MP, and issues in which zombies would disappear after a player left and re-entered a “chunk” of the game world in both SP and MP. These issues were particularly obvious in larger zombie population games and as such impacted a lot of our hardcore players. You should find your game much improved on this count, although t...

Re-population of the Dead: Build 42.21 Unstable Released

by AmazingSully

{STEAM_CLAN_IMAGE}/4460946/3ab5ae515b648cc78730233a9d4d103ccae889a8.png Hello Survivors! We’re back, and we have a new update, which is now available to play and test on the Unstable branch on Steam. As our first incremental update post-Build 42, this update contains fixes and updates for a whole bunch of things, and we’d love your feedback on them. How to update your Project Zomboid game client to access Unstable 1. Right-click Project Zomboid in your Steam Library. 2. Select “Properties”. 3. Under “Game Versions & Betas” select “Unstable”. {STEAM_CLAN_IMAGE}/4460946/f6e3f5b10e52b75e8fb54e02536be214f579cc74.jpg Existing savegames on Build 42.20.4 should not be affected by this update, however, if you want to test 42.21 with an existing save, we highly recommend manually backing up your save before attempting to play it on the Unstable branch. If you do discover issues with an existing savegame, please let us know via the forums. What’s in this update? 42.21 is an incremental update an...

42.20.4 STABLE & 42.19.2 UNSTABLE & 41.78.21 LEGACY Hotfixes Released

by AmazingSully

While this update should not break saves, if you encounter any bugs please ensure you can replicate them on a fresh save with no mods installed before reporting them to our team here. FIXES Fixed security vulnerabilities. Mod makers should be aware that as part of this fix, the loadstring and loadstream methods have been removed. If your mods used these methods you will need to update your mods. If you were using these methods to execute code sent from the server, then you will need to create the necessary methods and call them by sending the appropriate commands. If you are unable to replace these methods in your case, please report the issue in the #mod_portal channel of The Official Project Zomboid Discord server, explaining how you were using them As always, discussions regarding this update can be found pinned to the Project Zomboid Discussions Forums here.

42.20.3 STABLE Hotfix Released

by AmazingSully

While this update should not break saves, if you encounter any bugs please ensure you can replicate them on a fresh save with no mods installed before reporting them to our team here. MP Improved server player limit handling, including support for up to 254 players and administrator access when servers are full Fixed an issue that would cause the client to hang on "Loading Map" forever FIXES Addressed multiple causes of a memory leak that could lead to performance degradation and crashes over time If you continue to encounter an out of memory error in a new save, please submit a bug report with your logs and profiler video from debug so the team can investigate Implemented several memory optimisations Reduced instances of black and gray boxes appearing when travelling quickly through the world Additional causes of this issue are still being investigated and will be addressed in a future update Fixed issues that could cause errors during lighting updates. As always, discussions regardin...

Show your Spiffo’s pride, and help us fundraise

by Rockjaw

"Welcome to Spiffo’s, how can we serve you today?"Today we're launching our latest collaboration with the wonderful humans at Makeship. Here’s what’s on the menu:A Chef Spiffo plushie, with that cheeky raccoon looking as happy as can be in his adorable chef’s outfit!Our Spiffo's Restaurant Pin Collection, featuring:A Spiffo’s logo pin ( © Spiffo’s Corporation, 1993) created with a special “layered” effectA ‘Happy Birthday Spiffo’ pinA ‘Spiffo gets his burger on’ pinAnd last but not least, an official keychain with a delightful plushie version of the, uh, Spiffo part of Spiffo’s logo, seen here with all these other exciting official items!Be the envy of your friends! Represent your corporate allegiance with pride! All hail Spiffo!FUNDRAISINGOnce again (and thanks to the generous accountants at the Spiffo’s Corporation), all of our proceeds from this campaign will be donated to Mary’s Meals, a charity dedicated to providing nutritious meals to hungry schoolchildren all around the world.W...

42.20.2 STABLE Hotfix Released

by AmazingSully

While this update should not break saves, if you encounter any bugs please ensure you can replicate them on a fresh save with no mods installed before reporting them to our team here. TECHNICAL/DEBUG Fixed percent symbol handling in files Mods should use %% to display % characters A temporary workaround was implemented to allow both methods of processing, however mod makers should update their mods to use %% to display % characters going forward as this workaround will be removed in a future unstable update Error logs will be populated highlighting the error so mod makers can see what needs to be updated going forward Fixed quick tips displaying % as %% Added memory debug-information when showing fps debug info As always, discussions regarding this update can be found pinned to the Project Zomboid Discussions Forums here.

42.20.1 STABLE Hotfix Released

by AmazingSully

While this update should not break saves, if you encounter any bugs please ensure you can replicate them on a fresh save with no mods installed before reporting them to our team here. MP Improved Lua checksum validation for multiplayer anti-cheat Fixed an issue that caused significant performance problems with chunk unloading on multiplayer servers This should fix most of the bugs players were getting on high-pop servers due to server lag Fixed errors and crashes that could occur when selecting Multiplayer while certain languages were selected Fixed an issue where vehicles could temporarily disappear for players after another player disconnected Fixed an issue that would allow broken B41 worlds to be hosted on B42 servers Fixed an issue where players switching from b41 to B42 could be met with a missing menu FIXES Improved memory usage by reusing discarded world data Fixed a memory leak that could lead to performance degradation and crashes over time If you continue to encounter an out...

Perennial early access game Project Zomboid hit a new concurrent player record after a huge map update added reworked towns, a spooky orphanage and '400 procedural basements'

by Rick Lane

It's been a big week for Project Zomboid, the wildly successful zombie survival sim that, like a doomsday prepper holed up in a fortified basement, simply refuses to leave Steam early access. Its first major build update since 2021 coincided with a slight price increase for The Indie Stone's undead phenomenon, but this didn't stop the game from setting a new record for concurrent players on Steam... Read more.

Project Zomboid peaks at 124k players

by SteamDB

Project Zomboid has peaked at 124,995 concurrent players on 9 August 2026. View charts and more statistics on our website.

The massive Project Zomboid Build 42 is out now

by

Project Zomboid just had a big free upgrade with Build 42 now out in the stable branch, bringing with it an overhaul to various parts of the game. Read the full article here: https://www.gamingonlinux.com/2026/07/the-massive-project-zomboid-build-42-is-out-now/

Build 42.20.0 Stable Released

by AmazingSully

As part of our preparations for the release of Build 42 Stable, we've also released a small security patch for Builds 41 and 42.19. We'd like to thank Jorge Escabias for responsibly disclosing this vulnerability and bringing it to our attention before it could be exploited. We greatly appreciate the time and effort involved in reporting issues like this, which helps us keep the game secure for everyone. There is a small chance this change may affect some mods. If you encounter any compatibility issues after the update, we would ask that mod authors please report them in the mod_portal channel on our Discord so we can investigate. How do I switch back to Build 41? Right-click PZ in your Steam library. Select "Properties". Under "Game Version & Betas" select "legacy41". B42 Feature List The patch notes below cover the changes between 42.19 and 42.20. For an overview of the features and additions introduced between Build 41 and Build 42, check out our feature list here. Please note that B...