The Indie Stone has released hotfixes across all three Project Zomboid branches: 42.20.4 Stable, 42.19.2 Unstable, and 41.78.21 Legacy. The update addresses security vulnerabilities and, as part of that fix, removes the Lua loadstring and loadstream methods.

The studio says the update should not break existing saves, but asks players to verify bugs on a fresh save with no mods installed before reporting them to the bug reports forum.

The removal of loadstring and loadstream directly affects mods that relied on these methods. Mod authors must update their work accordingly. If a mod used these methods to execute code sent from a server, the recommended approach is to create the necessary methods and call them by sending the appropriate commands.

Modders who cannot replace these methods should explain their usage in the #mod_portal channel of The Official Project Zomboid Discord server.

Discussion of this update is pinned in the Project Zomboid Steam Discussions.

The Project Zomboid 42.20.3 stable hotfix is out now. The team says the update should not break saves, and it targets a set of multiplayer and stability problems, including a higher player cap and memory leak fixes.

• Improved server player-limit handling, with support for up to 254 players.
• Administrators can access servers even when they are full.
• Fixed a client hang that could leave players stuck on "Loading Map" forever.

• Addressed multiple causes of a memory leak that could degrade performance and cause crashes over time.
• Applied several memory optimizations.
• Reduced black and gray boxes appearing while traveling quickly through the world; additional causes are still being investigated for a future update.
• Fixed errors that could occur during lighting updates.

Before reporting any issue, the developers ask that you verify it on a fresh save with no mods installed. If you still get out-of-memory errors on a new save, include your logs and a profiler video from debug in a bug report (https://theindiestone.com/forums/forum/85-bug-reports/).

Join the pinned Project Zomboid discussion thread for this update (https://steamcommunity.com/app/108600/discussions/0/84032037661541571/).

Project Zomboid's 42.20.2 stable hotfix is out now. The update fixes percent symbol handling in files and should not break existing saves. If you encounter any bugs, please replicate them on a fresh save with no mods installed before reporting them to the bug reports forum.

Mods should use %% to display % characters. A temporary workaround has been implemented to allow both methods of processing, but it will be removed in a future unstable update. Mod makers should update their mods going forward, and error logs will be populated highlighting the error so they can see what needs updating.

• Fixed quick tips displaying % as %%
• Added memory debug-information when showing FPS debug info

Discussions regarding this update can be found pinned in the Project Zomboid Discussions Forums.

Project Zomboid's stable branch received hotfix 42.20.1 on August 5, 2026, focused on multiplayer server performance, a memory leak, and several build 41-to-42 transition issues. The update should not break saves. If you hit any bugs, the team asks you to confirm they can be replicated on a fresh save with no mods installed before reporting them on its bug reports forum.

• Improved Lua checksum validation for multiplayer anti-cheat.
• Fixed significant performance problems with chunk unloading on multiplayer servers, which should fix most of the bugs players saw on high-pop servers due to server lag.
• Fixed errors and crashes that could occur when selecting Multiplayer while certain languages were selected.
• Fixed vehicles temporarily disappearing for players after another player disconnected.
• Fixed an issue that allowed broken build 41 worlds to be hosted on build 42 servers.
• Fixed a missing menu for players switching from build 41 to build 42.

• Improved memory usage by reusing discarded world data.
• Fixed a memory leak that could cause performance degradation and crashes over time.
• Fixed a rare exception that could occur during exploration.
• If you still get an out-of-memory error in a new save, submit a bug report with your logs and a profiler video from debug.

• Added support for mods to write .json files.
• Fixed percent symbol handling in translation files; mod translations should now use %% to display a single %.

Join the pinned Project Zomboid Discussions thread for more on the update.

🔥 «Path to Fortune»: the best server in Project Zomboid for beginners and experienced players! 🔥

Are you just starting your journey in the zombie apocalypse and afraid of getting lost among the mechanics? The Path to Fortune server was created especially for beginners — here you won't feel helpless.

We've slightly simplified survival so you can focus on what matters most — your character's story and having fun with friends. Here's what awaits you on the server:

✅ Increased loot — more chances to find everything you need.
✅ Faster skill progression — become a master quicker.
✅ Fast book reading speed — learn knowledge without tedious waiting.
✅ Starter kit — you won't have to fight for every can from the first minutes.
✅ Increased trait points — create a character to fit your playstyle.
✅ High refrigerator efficiency — food stays fresh longer, meaning you have more time for adventures.
✅ Modded weapons, clothes, and cars — diversify your tactics and survival style.
✅ There are no vanilla cars in the north — only modded cars, to truly unlock the potential of vehicles.

You don't need to be a veteran to succeed: on Path to Fortune your story starts brightly and confidently. Join in — let your road to fortune begin right now! 🗺️🧟

IP: 185.207.214.39:16274

https://steamcommunity.com/sharedfiles/filedetails/?edit=true&id=3624331661

Collection of mods for playing on the server

Project Zomboid's latest stable build, 42.20.0, arrives as part of preparations for the full Build 42 Stable release. It also ships a security patch for Builds 41 and 42.19, credited to Jorge Escabias for responsible disclosure. Because the fix may affect some mods, mod authors are asked to report compatibility issues in the mod_portal channel on Discord.

The map has received a substantial "glowup," with many areas overhauled using new tiles, buildings, locations, room definitions, and containers, plus performance optimizations around the new content. World generation adds XL and XXL tree types with updated biomes, and cutting down the Extra Large trees gives more wood loot. While driving or scouting ahead, players can hide XL tree overhang with a right-click.

Challenge mode gets two new entries: "28 Minutes Later" and "Top of the World" replace "Cabin in the Woods" in rotation. Spawn coordinates were adjusted for "Winter is Coming" and "A Really CDDA," which no longer allows respawning. Challenge menu videos and descriptions were updated, as was the main menu artwork. Main menu SFX is temporarily disabled, and an epilepsy warning now appears at startup. The Unstable warning message was removed, and the Discovered Recipes and Media UI gained filter search boxes, alphabetical sorting, and discovered recipes shown on top.

Butcher hooks now yield more meat cuts from large animals. Vehicle speed and towing were rebalanced, allowing trailers to detach during sharp or fast turns. The "Zombie count before deletion" Sandbox option caps at 5000 instead of 500, Extinction mode's WouldInfectionFactor was raised to 2.0, and the sand biome's sand/dirt/clay balance was tweaked.

The default controller preset is now "Original," with running/sprinting bound to buttons. The update adds gamepad support to the trading interface and PrintMedia, improves campfire interaction reliability, and fixes numerous controller issues including crop interaction, fishing, vehicle seat menus, and several crashes.

Anti-cheat has been reworked and re-enabled, with antiCheatItem now handled server-side; NoClip and PacketException are still WIP. Servers gain a "Show coordinates" option, ping values in the Players and Users list tabs, faster load times between "Click to Start" and spawning, better network performance during vehicle-zombie collisions, and a reworked stackable-item transfer system that should speed up large stack transfers.

Trading now has separate interfaces for each splitscreen player and a full list of tradable items. The patch fixes numerous exploits, including item spawning via animal attachment commands, arbitrary item spawning in the world or via modData, XP exploits, foraging item manipulation, and copying dedicated server map data. It also addresses a long list of multiplayer bugs: zombie culling and desyncs, remote animation timing, special characters in server names, map chunks failing to load while driving, local chat not displaying, garage doors, hand crafting, skill book XP, and more.

Notable fixes include a rare AMD GPU crash, a macOS crash, Linux/MacBook desktop icons, hypothermia dealing damage too fast, generator power consumption, point-blank shots missing, vehicle engine power being set to maximum script values, excessive zombie thump damage, and restoration of the Modding API functionality lost in the 42.14 security patch. SFX adds new sounds for metal saw crafting, welding, packing/unpacking, and water dispensers, and fixes VOIP cutting out under heavy audio load. Build 42 now correctly applies default options when migrating from Build 41, and compatibility launch mode is back.

Players who want to stay on Build 41 can right-click Project Zomboid in Steam, go to Properties, and under "Game Version & Betas" select legacy41. For a highlights overview of Build 42's features, see the official feature list. Discussion about the update is pinned in the Project Zomboid forums.

Project Zomboid's Build 42 officially launches Wednesday, July 29, 2026, as 42.20 hits Stable — the update that brings the big map "glow-up" detailed yesterday. Ahead of launch, the team has posted a checklist covering save compatibility, the creator embargo, a price rise, and localization.

Build 41 saves won't be compatible with Build 42. Players and server owners who want to stay on Build 41 should move to the legacy41 beta now: right-click Project Zomboid in Steam, choose Properties, and under Game Versions & Betas select legacy41.

Existing Unstable 42.19 saves also won't carry over to 42.20 because of the added map content. To keep playing that version, select the 42.19 beta instead using the same steps.

Streamers and YouTubers with early access to the 42.20 map overhaul can post and broadcast from 10AM BST / 5AM EDT / 11AM CEST / 12PM EEST on Wednesday, a few hours before official launch. If you fancy spoiling it all, keep an eye on YouTube, Twitch, and wherever else creators post.

As with Build 41's launch, Build 42 brings a price rise — though the team says it isn't one many would consider huge, and the game will stay reasonably priced for the gameplay on offer. The increase applies across storefronts and regions once 42.20 launches to Stable. Anyone who wants the game at the current price, or as a gift, can act now on Steam.

Community Localization continues past launch, with feedback later in the #localisation_feedback channel on The Official Project Zomboid Discord Server. Build 42 adds Czech, Indonesian, Spanish (Argentina), and Spanish (Mexico). Chinese (Simplified), Chinese (Traditional), and Catalan have known font issues the team is working on, to be addressed in a future update. Catalan, Romanian, and Spanish (Chile) still contain a lot of English vocabulary for now.

Project Zomboid's Build 42.20, "The Big Glow Up," reaches the public stable branch this Wednesday, July 29. The update pushes the Knox Event Exclusion Zone far beyond the Unstable beta: the Kentucky setting has been heavily expanded and reworked, with rebuilt towns and a map that has doubled in size since Build 41. The stable plan post goes into the full rollout details.

Seven towns are entirely reworked in 42.20: Riverside, West Point, Rosewood, Fallas Lake, Muldraugh, Ekron, and Dixie. They follow the new map standards:

• Each town has its own idiosyncratic style.
• All buildings and houses are unique.
• Landscaping between buildings is consistent.
• Unique tiles are used where needed.

These standards grew out of the Unstable period's western expansion, which added Brandenburg, Ekron, and Irvington. Art Director Ayrton Orio says the positive reaction to Unstable triggered an enlarged art team and the much broader overhaul arriving now.

Other locations to find include an abandoned orphanage, an entirely new prison, a revamped logging compound, and a boy scout camp.

• The map's surface area doubles compared with Build 41.
• 1,400 new unique buildings.
• 20,000 new tiles, bringing the total to 35,000.
• 400 procedural basements and 75 unique basements.
• Hundreds of posters and wall decorations, light overlays for any light source, snow overlays, burned tile variants, 30-degree roofs, more window types, and new crafting tiles.

Some current Challenge maps leave the rotation for now, while "A Really CD DA" and "Winter is Coming" return with improvements. Two new challenges are available:

• "Top of the World" starts you at the top of a skyscraper.
• "28 Seconds Later" drops you into a world full of sprinting zombies.

The Unstable branch's menu art was removed after players spotted AI-generated artifacts. Since then no AI has been used in the art processes, the team says, and 42 stable will launch with a new title screen in Project Zomboid's "rendered style" — the same look used on in-world flyers, newspapers, and leaflets. It is the first iteration of a main menu the team plans to improve further alongside the spawn map and front-end UI.

Orio discusses the map's future and his art-director role in an interview with MrAtomicDuck; new Design Director Christian Allen was recently interviewed as well.