A practical, ground-up guide to modding Project Zomboid targeting Build 42.15+.
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Written as actual mod development happened — real examples, verified techniques, and honest notes about what still needs confirming in-game. Covers mod structure, item and recipe scripting, Lua, multiplayer architecture, visual assets, testing, and a running changelog of modding API changes by version.
Official B42 documentation is sparse. The PZwiki lags behind. This guide documents the current reality.