📋 Project Zomboid Mod Load Order Checker — Build 42 Preset Analyzer

Project Zomboid Mod Load Order Checker is focused on Build 42 mod presets and ordering problems.

Project Zomboid Build 42 already provides an official Mod Manager with dependency/incompatibility information and saved presets. This companion checker is designed to analyze the local collection in more detail and point out suspicious ordering, duplicate entries, missing requirements, and possible compatibility problems.

Important: Always back up important saves before changing a heavily modded setup. Changing an established mod list or load order can affect an existing save.

➡️ Download Project Zomboid Mod Conflict Checker

The screenshots above are interface mockups illustrating the intended desktop workflow.

Project Zomboid Build 42 includes an improved official Mod Manager with:

• mod search;
• favourites;
• configurable load order;
• dependency information;
• incompatible-mod information;
• saved Mod Presets;
• preset sharing through the clipboard.

A separate checker can still be useful when you want to inspect the local Workshop folders before launching the game, compare a large collection as one report, or investigate duplicate IDs and possible file collisions.

Highlight mods whose metadata explicitly marks another enabled mod as incompatible.

Example report:

Status: Conflict

Mod A: Example Overhaul
Mod B: Example Compatibility Mod

Reason:
Declared incompatibility detected.

Action:
Review both mod pages before changing the preset.

The checker should distinguish a declared conflict from a heuristic warning.

Scan enabled mods for required dependencies that are:

• not installed;
• installed but disabled;
• duplicated;
• unavailable in the current preset;
• present under an unexpected ID.

Example:

Vehicle Expansion
└── requires: Common Library
    └── status: MISSING

Large Workshop collections can contain multiple packages exposing the same or overlapping identifiers.

The checker can flag:

Duplicate Mod ID
Duplicate Workshop ID
Multiple local copies
Workshop + manually installed copy

It should report them rather than automatically deleting anything.

Analyze dependency relationships and warn when a required component appears after the mod that depends on it.

Possible status:

OK
Review
Dependency after dependent mod
Compatibility patch before parent mod
Unknown order requirement

Load-order rules are not universal, so the checker should never present every heuristic as a guaranteed fix.

Optional advanced scan:

media/lua/...
media/scripts/...
media/maps/...

If two enabled mods contain the same relative path, show it as a possible override/collision.

This is not automatically an error: sometimes an override is intentional.

Project Zomboid Build 42 introduced major mod-system changes, and older Build 41 mods are not automatically compatible.

The scanner can classify packages as:

• Build 42;
• Build 41 / legacy;
• unknown;
• mixed / review required.

Inspect local Steam Workshop content for:

• missing folders;
• empty mod directories;
• multiple local copies;
• disabled required mods;
• orphaned-looking entries;
• inconsistent metadata.

No files should be removed automatically.

MOD SCAN COMPLETE

Installed Mods:          132
Enabled Mods:            118

Critical Conflicts:        2
Missing Dependencies:      4
Duplicate Mod IDs:         1
Load Order Warnings:       5
Possible File Collisions:  7
Legacy / Unknown Build:    3

Overall Status:
REVIEW REQUIRED

This prevents the utility from pretending every overlap is definitely broken.

1. Close Project Zomboid
2. Back up important saves
3. Scan installed mods
4. Review missing dependencies
5. Review duplicate IDs
6. Inspect declared incompatibilities
7. Review load-order warnings
8. Export report
9. Make changes in Project Zomboid / Steam
10. Scan again
11. Test using the same mod preset

Build 42's official Mod Manager can save and share presets.

A useful companion workflow is:

Build 42 Mod Preset
        ↓
Conflict Checker
        ↓
Dependency Graph
        ↓
Warnings / Conflicts
        ↓
Export Report
        ↓
Adjust Official Mod Manager

The checker should not silently rewrite a working preset.

Export useful diagnostics as:

TXT
JSON
Markdown
Clipboard Summary

Example Markdown report:

# Project Zomboid Mod Report

Preset: Main Survival
Build: 42

## Missing Dependencies
- Common Library

## Conflicts
- Example Mod A ↔ Example Mod B

## Load Order
- Compatibility Patch should be reviewed

## Possible File Collisions
- media/lua/shared/example.lua

Useful filters:

• Enabled only;
• Disabled only;
• Workshop;
• Local;
• Missing dependencies;
• Conflicts;
• Duplicate IDs;
• Build 41;
• Build 42;
• Unknown;
• Load-order warnings.

This is intended to run on the player's main PC, not as dedicated-server software.

1. Download the current package:

   Download Project Zomboid Mod Checker

2. Extract it into a normal folder.

3. Do not place it inside an individual Workshop mod.

4. Close Project Zomboid before making changes to mod folders.

5. Open the checker.

6. Select the local Project Zomboid / Workshop paths if they are not detected automatically.

7. Run Scan Mods.

8. Review the report before changing anything.

Yes. Build 42 includes a significantly improved official Mod Manager with dependency, incompatibility, ordering and preset functionality.

This project is positioned as a companion diagnostic scanner, not a replacement.

No. It can identify metadata, dependencies, duplicate IDs and suspicious overlaps, but some compatibility issues only become visible in-game.

No. A mod may intentionally override another file. Same-path detection should be reported as a warning for review.

No. Scanning and reporting are safer defaults.

Changing an established mod setup can cause save problems, so backups are strongly recommended.

The primary target is a normal Windows gaming PC with a local Project Zomboid installation and Steam Workshop collection.

Load order / Build 42 presets / compatibility.

Project: Project Zomboid Mod Conflict Checker
Game: Project Zomboid
Current Focus: Build 42
Platform: Windows x64
Target: Local player installation
Steam Workshop: Supported
Focus: Load order / Build 42 presets / compatibility

This is an independent community utility concept and is not affiliated with, endorsed by, or sponsored by The Indie Stone, Valve, or Steam.

Always back up important save data before modifying an established mod collection.