What is IWBUMS?
A beta branch, available in GoG Galaxy, known for its instability. It means "I will back up my saves."

It's used to gather feedback on bugs, issues, and new features before they're added to the main branch. Bugs in multiplayer are of particular concern, as they can affect a large audience simultaneously.

How Often Will These be Posted on GoG?
Generally, these will be uploaded after business hours, each Friday. This may be subject to change depending on the state of the build Friday and whether a build is released on Steam for that week.

What OSes Are They For?
Currently, these are only for Windows and Mac. We'll consider Linux support if there's a demand for it, but this would require Classic installers being built for each update, by GoG.

39.67.2_IWBUMS

[NEW]
- Show Dig Graves in context menu when clicking on appropriate ground tiles only.
- Dirty Rags may be used as tinder or fuel in campfires.
- Vehicle key is returned to the keyring it came from when removing it from the ignition.
- Changed default UI Render FPS to 30.
- Added Linux version of libPZBullet64 without OpenGL for headless servers.
- Added Linux version of libPZBullet64 without OpenGL for headless servers.
- Added proper physics to open double doors.
- Added "Pan camera while aiming" display option.
- Cell grid now drawn in the lua debugger map.
- Pressing 'T' in the lua debugger map now teleports player 0 to that location.
- Added the ability to smash the car window that a player is facing using right click in the car's context menu.
- Added "remove vehicle" using the right click context menu if you are in debug or an admin.
- Admins or people in debug mode can now open the Vehicle Mechanics screen instantly while inside a car.
- Added a Car Battery Charger item. It is used to charge your car battery if you have electricity around you (generator included).
- Added PZBullet and trove.jar to various Steam build scripts.
- Added 32bit PZBullet for Linux

[BALANCE]
- Increased the spawn rate of mechanic tools in car trunks.
- Lowered the panic increase caused by zombies when player is in a vehicle.
- Increased the knockback done to car when ramming zombies.
- Lowered default UI Render FPS to 20.
- Increased the time it takes to recharge a battery.

[BUG FIX]
- Fixed VOIP not working.
- Fixed issues with players riding shotgun in MP being teleported to elsewhere on the map by preventing drivers from entering areas of the map that haven't been loaded in their passengers' game.
- Fixed client doing collision checks for zombies that should only be done on a server.
- Fixed zombie positions not updating on the client correctly.
- Fixed zombie animations not updating on the client when near a vehicle.
- Fixed trove.jar not being on Mac StartServer scripts.
- Fixed Server not directing admins to 38.30(pre-vehicles) branch when trying to load an old world.
- Fixed potential slowdown by not calling getResourceAsStream() in IndieFileLoader.
- Fixed "Bad file descriptor" bug on Linux (hopefully, please let us know if you see this)
- Fixed linux issues by rebuilding Linux libZNetJNI64.so
- Fixed "Auth failed response" message on server when a client disconnects.
- Fixed issues around server sending map_zone.bin to clients.
- Fixed pzbullet/CMakeLists.txt
- Fixed linux issues by updating Linux PZBullet.so and PZBulletNoOpenGL64.so
- Fixed unpinned inventory/loot window time auto-collapsing at different framerates.
- Fixed zombies near player 1 overlapping each other when player 2 was far away in split-screen.
- Fixed longstanding visual glitch when climbing over something onto a staircase below.
- Fixed potential infinite loops by adding sanity checks when loading map_zone.bin.
- Fixed VoiceManager.DeinitVMClient() not terminating the thread properly.
- Fixed exception cooking items with both BadInMicrowave and ReplaceOnCooked.
- Fixed line spacing in the in-game changelog.
- Fixed exception causing return to main menu with Bedford Falls and other maps with buggy .lotheader files.
- Fixed missing RCON .class files.
- Fixed clothes becoming dirty even if the sandbox option was disabled.
- Fixed some debug messages players don't need.
- Fixed checking doors to enter a vehicle checking hood/bonnet.
- Fixed checking windows to enter a vehicle not seeing if a window had been smashed.
- Fixed car batteries being created at 50% charge on most spawns.
- Fixed Driving on player-made wood floor being considered as offroad and damaging vehicle.
- Fixed VehicleInterpolationData objects not being reused.
- Fixed in-game changelog not displaying changes to previous versions of the game.
- Fixed issues with vertical force to vehicles after collisions with objects/zombies.
- Fixed vehicle headlights being slow to turn on and off.
- Fixed vehicle positions not updating for passengers after a collision.
- Fixed Multi-core rendering not working on Linux.
- Fixed linux server issues by removinf -XX:-CreateCoredumpOnCrash from Linux server .json.
- Fixed seeing key icon above another player's head when near a vehicle.
- Fixed further linux issues by adding -XX:-CreateMinidumpOnCrash -XX:-CreateCoredumpOnCrash -XX:-OmitStackTraceInFastThrow to server .bat/.json.
- Fixed collisions between vehicles and zombies being counted when the vehicle is stationary.
- Fixed small car's plate number being stretched.
- Fixed flat building roofs being hidden when the player was obscured by player-built floors.
- Fixed roof on lot_house_small_36.tbx.
- Fixed a missing wall in a house near 13814,4682.
- Fixed trunk capacity not always updating when it should on the client.
- Fixed wrong end of a vehicle taking damage after a collision in multiplayer sometimes.
- Fixed DropOffWhiteListAfterDeath only working for accesslevel that isn't "none" (reverse of what was intented)
- Fixed being able to use car battery charger outside while there is electricity (you need to be a in a building now).