Every update, patch and developer post we have logged for Project Zomboid, newest first: the date, the headline, a one-line summary and a link to the original source. We file Project Zomboid under Survival Horror.
Project Zomboid in the Lab
| Date | Title | Summary | Source |
|---|---|---|---|
| 2026-10-28 | Twitch Rivals + Project Zomboid – tomorrow! | The Project Zomboid team announced a Twitch Rivals stream featuring the game on October 29th. | projectzomboid.com |
| 2026-10-27 | Moving on Up: 42.22 Pre-Release | Build 42.22 hits a new Pre-Release branch with climbable ladders, crowbar-forced doors and windows, and gameplay fine-tuning ahead of Stable. | store.steampowered.com |
| 2026-10-21 | A Note on Java Mods and Modding | The Indie Stone confirms only Lua modding is officially supported and warns that Java mods run unsupported third-party code that can break on updates or pose… | store.steampowered.com |
| 2026-09-28 | Build 42.21 Stable Released | Build 42.21 leaves Unstable for Stable with fixes for MP zombie duplication and vanishing zombies, better XXL tree cutaway in vehicles, and re-enabled Lua… | store.steampowered.com |
| 2026-09-28 | 42.21 Stable Released | Build 42.21 leaves the Unstable beta for the stable branch, with full patch notes posted separately and the devs calling this release cadence the new standard. | projectzomboid.com |
| 2026-09-23 | Re-population of the Dead: Build 42.21 Unstable Released | Build 42.21 on the Unstable branch fixes zombies vanishing after chunk reloads, tweaks XXL tree cutaway, and re-enables loadstring/loadstream for modders. | store.steampowered.com |
| 2026-08-26 | 42.20.4 STABLE & 42.19.2 UNSTABLE & 41.78.21 LEGACY Hotfixes Released | Hotfixes 42.20.4, 42.19.2 and 41.78.21 fix security vulnerabilities and remove the loadstring and loadstream methods, requiring mod updates. | store.steampowered.com |
| 2026-08-17 | 42.20.3 STABLE Hotfix Released | Hotfix 42.20.3 fixes memory leaks and lighting errors, stops clients hanging on "Loading Map", and raises the server player limit to 254 with admin access… | store.steampowered.com |
| 2026-08-06 | Show your Spiffo’s pride, and help us fundraise | A Makeship collaboration adds a Chef Spiffo plush, Spiffo's Restaurant pin collection, and a plushie keychain, with proceeds donated to Mary's Meals. | store.steampowered.com |
| 2026-08-05 | 42.20.2 STABLE Hotfix Released | Hotfix 42.20.2 fixes percent symbol display in files and quick tips and warns mod makers to use %% for % characters before a temporary workaround is removed. | store.steampowered.com |
| 2026-08-05 | 42.20.1 STABLE Hotfix Released | Hotfix 42.20.1 improves Lua checksum validation for MP anti-cheat, fixes chunk-unloading lag on high-pop servers, and patches a memory leak that caused… | store.steampowered.com |
| 2026-08-02 | Project Zomboid peaks at 121k players | Project Zomboid peaked at 121,603 concurrent players on 2 August 2026, per SteamDB's tracking. | store.steampowered.com |
| 2026-08-02 | 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' | The first major Project Zomboid build since 2021, adding reworked towns and 400 procedural basements, coincided with a price rise and a new Steam… | store.steampowered.com |
| 2026-08-02 | Project Zomboid soars to a new Steam high after 19-month wait for an update, but its dev won't rush the next one | Build 42 arrives after a 19-month wait and lifts Project Zomboid to its highest ever Steam player count; the developer says the next update won't be rushed. | store.steampowered.com |
| 2026-07-29 | The massive Project Zomboid Build 42 is out now | Build 42 has launched on the stable branch as a free update, bringing an overhaul to various parts of Project Zomboid. | store.steampowered.com |
| 2026-07-29 | PROJECT ZOMBOID BUILD 42.20 RELEASED! | Project Zomboid version 42.20 has been released to the public Stable branch, per the official dev blog. | projectzomboid.com |
| 2026-07-29 | Build 42.20.0 Stable Released | Build 42.20 stable ships a map overhaul, XL trees, two new challenge modes, and vehicle and butchering rebalances, plus a security patch for older builds. | store.steampowered.com |
| 2026-07-29 | Project Zomboid build 42 is finally here, and it adds animals, basements, and deeper crafting | Project Zomboid build 42 has released after more than a year of waiting, adding animals, basements, and deeper crafting. | store.steampowered.com |
| 2026-07-28 | B42 CHECKLIST | Build 42 launches July 29 as 42.20 stable, with legacy41 and 42.19 betas kept open for existing saves; a price rise follows once 42.20 hits stable. | store.steampowered.com |
| 2026-07-24 | BUILD 42 STABLE PLANS | Build 42.20 arrives on Project Zomboid's stable public branch on Wednesday, July 29, alongside a new Build 42 Steam store trailer. | projectzomboid.com |
| 2026-06-01 | Build 42.19.0 Unstable Released | Build 42.19.0 unstable adds controller remapping and a gamepad customization UI, plus balance changes to the Hunter and Hiker occupations and item encumbrance. | store.steampowered.com |
| 2026-05-29 | REINFORCING THE BARRICADES | The Indie Stone is reversing its move to external localization in favor of community translation, with Build 42.19 unstable planned for next week. | store.steampowered.com |
| 2026-05-11 | Build 42.18.0 Unstable Released | Build 42.18.0 unstable adds lever-action and shotgun reload animations, occupation balance changes, new modding hooks, and a multiplayer RakNet DoS fix. | store.steampowered.com |
| 2026-05-08 | SPRING IS HERE | Build 42.18 Unstable preview details modding support, multiplayer fixes, Rancher and Park Ranger occupation changes, and a reworked improvised gas mask filter. | store.steampowered.com |
| 2026-04-20 | Build 42.17.0 Unstable Released | Build 42.17 unstable adds skill VHS tapes, static spawn points, occupation and trait point changes, animal stress rebalancing, and controller UI work. | store.steampowered.com |
| 2026-04-17 | Location, Location | Build 42.17 Unstable adds non-canon sandbox spawn towns, occupation and trait rebalancing, skill-boosting VHS tapes, and a multiplayer sprinter option. | store.steampowered.com |
| 2026-04-14 | Charity Merch Update | The Brawler Spiffo merch drop raised over $180,000 for Médecins Sans Frontières, with Makeship adding 5% of proceeds; more merch is planned this year. | store.steampowered.com |
| 2026-04-08 | Patching a Zero Day Exploit | Project Zomboid banned a Workshop author and removed 14 mods that created files outside the game directory, affecting 500 to 2,200 devices on Build 42. | store.steampowered.com |
| 2026-04-08 | Stable(41.78.19) + UNSTABLE(42.16.3) Hotfixes Released | Stable 41.78.19 and unstable 42.16.3 hotfixes both carry a security vulnerability update; 42.16.3 also fixes a server browser exception. | store.steampowered.com |
| 2026-04-08 | 42.16.2 UNSTABLE Hotfix Released | Hotfix 42.16.2 for the unstable build fixes controller aiming, vehicle radial menu and seat-switching issues, and right-click force-aim conflicts. | store.steampowered.com |
| 2026-04-02 | 42.16.1 UNSTABLE Hotfix Released | Unstable hotfix 42.16.1 hides server browser IPs by default and fixes a multiplayer reconnect exploit, a timeout error, and a herbalist trait point exploit. | store.steampowered.com |
| 2026-03-31 | Build 42.16.0 Unstable Released | Build 42.16 hits the Unstable branch with occupation and trait rebalances, a tailoring XP rework and firearm attachment changes; 42.15 saves are incompatible. | store.steampowered.com |
| 2026-03-30 | Balancing Time | Build 42.16 Unstable reworks occupation starting skills and trait costs, adds Tinkerer and Target Shooter, removes Echo Creek as a spawn, and breaks saves. | store.steampowered.com |
| 2026-03-18 | [Updated 2026-03-20] Important Security Updates | Build 41.78.18 and unstable 42.15.3 patch mod-only security vulnerabilities reported by the community; unpatched legacy versions are removed from official… | store.steampowered.com |
| 2026-03-11 | 42.15.2 UNSTABLE HOTFIX Released | Hotfix 42.15.2 for the Project Zomboid unstable branch fixes save loading with non-ASCII usernames, animals not moving while roped, and GlobalModDataPacket. | store.steampowered.com |
| 2026-03-10 | 42.15.1 UNSTABLE HOTFIX Released | Unstable branch hotfix 42.15.1 fixes the game failing to load for usernames containing non-ASCII characters, and repeats the advice to start a fresh unmodded… | store.steampowered.com |
| 2026-03-09 | SOME NEW THINGS | Build 42.15 Unstable reworks the game modes with Apocalypse as canon plus Outbreak, Extinction and Rising, and adds new firearms, an ammo loot rework and… | store.steampowered.com |
| 2026-03-09 | Build 42.15.0 Unstable Released | Build 42.15.0 unstable reworks the game modes into Apocalypse, Outbreak, Extinction and Rising and adds six new firearms with magazines and repair recipes. | store.steampowered.com |
| 2026-02-26 | Press Q to Say Hi! | New design director Christian "Serellan" Allen introduces himself, details his background, and notes a state-of-the-game update alongside continued B42 work. | store.steampowered.com |
| 2026-02-18 | 42.14.1 BETA HOTFIX Released | Hotfix 42.14.1 on the Unstable branch fixes players getting stuck leaving cars, vehicles attracting zombies from far away, and multiplayer muscle strain not… | store.steampowered.com |
| 2026-02-16 | Build 42.14.0 Unstable Released | Build 42.14.0 unstable adds sitting on hay bales and toilets, dental floss and fishing line as thread substitutes, plus a long list of multiplayer fixes. | store.steampowered.com |
| 2026-01-19 | 42.13.2 UNSTABLE HOTFIX Released | Hotfix 42.13.2 for Project Zomboid's unstable branch adds multiplayer plastering and drying racks, and fixes zombie migration, animal pathfinding, and server… | store.steampowered.com |
| 2025-12-18 | 42.13.1 BETA HOTFIX Released | Beta hotfix 42.13.1 fixes multiplayer loot respawn, stutters, Nimble progression and animal bugs; MP saves from 42.13.0 are incompatible. | store.steampowered.com |
| 2025-12-11 | Unstable 42 MP Released | Unstable Build 42.13 adds work-in-progress multiplayer for stress testing, capped at 20 players, with ragdoll disabled and pre-42.13 saves incompatible. | store.steampowered.com |
| 2025-12-11 | Build 42.13.0 UNSTABLE Multiplayer Released | Build 42.13.0 opens an unstable multiplayer stress test, adding firearm aiming changes, a satchel body slot, and double-click inventory actions. | store.steampowered.com |
| 2025-11-10 | Makeship Campaign Ending November 14th | The Makeship charity campaign for Doctors Without Borders has been extended to November 14 at 4AM GMT, and The Indie Stone has partnered with Ndemic Creations… | store.steampowered.com |
| 2025-10-28 | Last Chance: Project Zomboid Merch Supporting Doctors Without Borders | The limited-edition Project Zomboid Makeship charity campaign — a Brawler Spiffo plush, hoodie and pin badge set — closes November 7 at 4PM GMT, with TIS… | store.steampowered.com |
| 2025-10-22 | Build 42.12.3 UNSTABLE Hotfix Released | Unstable Build 42.12.3 hotfix restores missing world resources such as stones, twigs and boulders, and fixes blade sharpening beyond Handle Condition. | store.steampowered.com |
| 2025-10-20 | Build 42.12.2 UNSTABLE Hotfix Released | Hotfix 42.12.2 fixes the Linux build not starting, language encoding, a shove-through-zombie bug, split-screen target highlighting, and a Lua deletion… | store.steampowered.com |