Do not use mods designed for Build 41. They will crash instantly.
Build 40 is significantly less demanding than more recent updates, making it a "new" alternative for players on older machines. Minimum for Build 40 Windows 10 (64-bit) Processor Intel 2.77 GHz Quad-core or equivalent Memory Graphics Dedicated GPU with 2 GB VRAM (OpenGL 2.1 support) Storage ~5 GB available space Why Play Build 40 Today?
If you'd like to dive deeper into Project Zomboid, I can help you with: