Project Zomboid

Project Zomboid

1,613 ratings
Random Zombies
File Size
321.808 KB
Jun 8, 2022 @ 11:07am
Mar 1, 2023 @ 9:52am
19 Change Notes ( view )

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Random Zombies

Compatible with version 41.78.16 (solo & multiplayer).

This mod lets you customize how many zombies of each type (crawler, sprinter, smart, tough, etc.) appear in your game. Inspired by Customizable Zombies.

Please make sure you've read the FAQ below before commenting if you have any issues.

  • easily customize how many Crawlers, Shamblers, Fast Shamblers or Sprinters appear in the world
  • easily customize how many Smart zombies, which can open doors, appear in the world
  • easily customize how many Tough and Fragile zombies appear in the world
  • more consistent and less CPU-intensive approach than other mods, with customizable update rate

How to customize spawn rates and update rate
  • go to the Random Zombies page during Sandbox creation or, if you're running a dedicated server, edit your (servername)_SandboxVars.lua file
  • note that Crawler%, Shambler%, FastShambler% and Sprinter% must add up to 100%
  • note that Fragile%, NormalTough% and Tough% must add up to 100%
  • speed defaults to 2% crawlers, 15% shamblers, 78% fast shamblers, 5% sprinters
  • toughness defaults to 100% normal, 0% fragile, 0% tough
  • cognition defaults to 0% smart

Frequently Asked Questions & Troubleshooting
  • The mod is not doing what it's supposed to do in multiplayer
    Make sure you have enabled the mod in BOTH the "Mods" and "Steam Workshop" sections during server creation

  • I cannot see the sandbox settings tab for Random Zombies
    The mod needs to be enabled at the main menu for the UI to update (main menu -> Mods, between Options and Workshop)

  • I'm getting an annoying popup window
    This is most likely due to a misconfiguration. Please make sure you read the How to customize spawn rates and update rate section above. If you're still having issues, check the actual error messages in your console.txt file or comment below with a link to your console.txt file (it can be found at C:\Users\(yourname)\Zomboid\console.txt, or ~/Zomboid/console.txt on macOS and Linux).

  • I am not seeing the exact number of sprinters I configured
    There is a random component to the algorithm, but the probability distribution has been tested to be accurately represented (in the limits of what computers can do, i.e. pseudo-randomness). If you notice a consistent large disparity, please check for conflicts with other mods. If you're still having issues, please run `BLTRandomZombies.fullCheck()` in your Lua console in Debug mode and comment below with a link to the 5 generated files (placed in C:\Users\(yourname)\Zomboid\Lua, or ~/Zomboid/Lua on macOS and Linux).

  • Do I need to set Zombie Lore Speed to Random?
    No, the mod will overwrite zombie speed regardless of that setting.

  • What is the Frequency parameter?
    Because of how the game works (modability, zombie recycling, etc.), Random Zombies has to check at regular intervals if the zombies are properly configured. Frequency allows you to choose how often RZ should do the check. In practice, the default setting (7500) works really well and you should not have to worry about it.

  • Can you allow the customization of strength, sight, memory as well?
    Unfortunately, there's no way to do that that I know of today.

  • Is this mod compatible with Night Sprinters?
    Yes, thanks to TheIlluminati!



Workshop ID: 2818577583
Mod ID: BLTRandomZombies
Popular Discussions View All (3)
Jun 17, 2023 @ 11:04am
PINNED: Bug Reports
Dec 9, 2022 @ 4:12am
Spanish (ES) Translation- UTF-8
Aug 30, 2022 @ 8:21am
Traditional Chinese (CH) Translation. UTF-8
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Archangel Gabriel Feb 23 @ 4:08pm 
Ah. Oh well!
belette  [author] Feb 23 @ 12:56pm 
@Archangel Gabriel not with this mod unfortunately

@G0D it's not possible with this mod at the moment
G0D Feb 23 @ 9:34am 
Is it possible to increase zombie health beyond what they have at "tough"? For example the mod "customizable zombies" has specific values/percentages you can tweak including health but sadly that mod is outdated and this seems to be the closest thing to it.
Archangel Gabriel Feb 22 @ 6:24pm 
Haven't downloaded it
Archangel Gabriel Feb 22 @ 6:24pm 
Is there a way to make the zombies blind? I need it for a thing I'm doing with a friend.
belette  [author] Feb 19 @ 9:46am 
@Paladin Blue Phoenix what JohnnyPocketCheese said, the base game offers a handful of settings to customize that the way you want
JohnnyPocketCheese Feb 18 @ 10:07pm 
@Paladin Blue Phoenix you can already do that in vanilla sandbox settings bruh
Paladin Blue Phoenix Feb 17 @ 9:58pm 
Does this mod allow me to stop zombie respawn all together? I am looking to prevent that to make it more of an immersive experience when I clear out an area.
belette  [author] Feb 15 @ 3:12am 
@Jay Ortiz these settings appear in the Random Zombies section of the sandbox options. Assuming you're using in-game hosting, you can enable the mod at the main menu (Mods menu below Options), then go to Host > Manage settings > Edit selected settings. Make sure the mod is enabled in both the "Mods" and "Steam Workshop" sections there. You can scroll down to see the Random Zombies section. Let me know if that answers your question.
Jay Ortiz Feb 14 @ 11:02pm 
I got confused with the percentage you mentioned I thought that was on the Night sprinters settings at the server settings. Where do I go to check this; Crawler%, Shambler%, FastShambler% and Sprinter%