🇫🇷 This mod completely replaces the classic zombie spawn system with something more alive and immersive.
Instead of zombies appearing “randomly,” the world stays active in the background
groups move across the map
they migrate between cities, roads, and dense areas;
they naturally drift toward the player during long periods of inactivity.
What this changes in-game
a more coherent world (less “magic pop-in”).
real moving zombie waves;
more realistic pressure around urban areas.
a more dynamic atmosphere when you camp too long.
The goal: keep a constant sense of threat without destroying performance.
How it works
The mod handles zombies in 3 layers.
Near the player: real, visible zombies.
Mid range: zombies tracked in the background (replaces vanilla caching).
Far away: simulated groups that keep migrating.
When a horde gets closer, it gradually becomes real zombies.
When it moves away, it returns to simulation.
Result: smoother transitions and far less weird pop-in.
Main features
persistent group migration.
attraction to dense/high-value areas.
player influence (staying too long in one place attracts more zombies).
globally controlled population (to prevent extremes).
full world-state persistence/saving.
Debug (if enabled)
O: debug panel
U: sonar / global view
This is only a summary: many small parameters shape group behavior.
I may release full documentation later if there is enough interest.
The mod is currently functional. Optimization work is ongoing (micro-freezes, especially in Louisville or while driving).
Once this is improved, the mod will be released in beta to gather player feedback.
Next logical step: multiplayer.
https://youtu.be/meNdC-eDWOI ⚠️ The video parts concerning Louisville is not representative of the actual distribution of the mod, as teleportation did not allow time for the category workflow to do its job.
https://youtu.be/M8P-tK7nqjQ - An example of the progressive filling of an empty map.
All questions or comments are welcome. ❤️
Zombie Migration System - The undead are finally alive!
This mod completely replaces the classic zombie spawn system with something more alive and immersive.
Instead of zombies appearing “randomly,” the world stays active in the background