Letum's Mod Merger

⭐ ⭐ (265 endorsements) 📥 6,776 downloads 📌 vv1.4.2.1 📅 3/25/2018
⚪ Last updated 2018

By Letum · Utilities

⬇ Download Mod Source: Nexus Mods 📅 Updated: 4/2/2018 📅 Created: 3/25/2018

🔍 Analysis

  • 👍 3.9% endorsement rate — high engagement, a strong quality signal
  • 🏆 #8 of 9 Utilities mods in this game by downloads

📋 About This Mod

Yes, original introduction.

Changelog v1. 4 'Ariadnes Threads':

  • []I've written this changelog once already but my PC crashed. I'm starting to see a pattern. Apparently the windows kernel crashed wow.

    []ModNames (the list on the left) is now sorted alphabetically!

    []Added multithreaded modloading, boosting performance by a lot.

    []Added Multithreaded support to Logger. You can see that by opening the log and looking for a "" keyword.

    []Added "Expander" to the performance watchers making them hidden (and hidable).

    []Added Thread Watcher to the performance watchers. Was quite suprised to see 15 Threads...

    []Added better system information logging at the start

    []Improved the unhandled exception handler (yes, this is a thing). It will now display a popup informing the user of a crash, rather than silently exiting.

    []Added RAR support. This is realized with Unrar, which also powers WinRAR. As a consequence, you will need to re-extract the tools folder with the current release. The RAR support works as follows: It will check the encoding and if it detects a RAR, it will extract its files and remerge them as ZIP, while renaming the original RAR file as .backup

    []Added options menu consisting of delete old files and copy all files. Should be pretty self explanatory.

    []Streamlined the whole merging process a lot making it easier to add future functionality.

    []Vanilla files are now indexed at the beginning of a merge process and then saved, which wasn't the case before. This improves performance a lot. I also improved the index to now only consume around 10MB rather than 20MB.

    []Streamlined the whole manifest thing, making it easier to add future functionality.

    []Fixed bug causing empty tags in the XML to crash the app. In my infinite wisdom, I thought an empty string would be an empty object, rather than a well...empty string.

    []Fixed a few (potential) bugs and pitfalls while we're at it.

    []Changed button behaviour to now only be disabled rather than hidden, and displaying a tooltip when hovererd over detailing the requirements for it to be enabled again.

    []Improved performance by kicking the Garbage Collectors ass after a merge process. Due to the nature of the process, a lot of memory was consumed but not immediately freed up after the process because the GC was quite reluctant to touch it.

    []Added a startup lua script which will be added to every merged mod, saying it was loaded and the files it contains. Code was stolen from the cheat mod (please don't tell him).

  • Future plans: This release opened the door for a lot of additional features. It would be an incredibly easy task to add basic "enable/disable mod" functionality. I'm also considering extending RAR support to other formats. I also plan on improving unhandled exception handling and maybe an auto upload functionality for the log or something. I'm not sure how recoverable some exceptions are and if I should even touch upon that, but I know that Subnautica has a bit of that. I also plan to add proper "versions supported" and "dependencies" support to the manifests and displaying any mismatches in red or something. I'm also experimenting with extending LUA scripts in some way and maybe adding a hook to the pak loading of KCD to display any conflicts in-game, but I'm not sure how well that would go.

    If you have any issues please attach your whole log file to a Github Issue or a Nexus issue.

    I've seen a few "complaints" on the other merger about the error "Line ending conflict" which will show up if you merge two files that have different line endings (most of the time DOS vs Unix). You can select your choice of line endings in a dropdown above the merged file in Kdiff. I've also uploaded a screenshot showing this.

    It basically bothered me that the other Mod Merger wasn't maintained anymore and the Source Code not publicly available. You could of course just use dotPeek or similar to copy the Source Code, but that'd be copyright infringement so... I just made my own.

    The Code is available on Github.

    Please keep in mind that I just hacked this together while watching Netflix and after not writing any C# code in 2 years, so it is a bit...messy. But will hopefully get cleaned up a bit soon.

    I opted to use KDiff3 like the other for now, but I'm looking for a more.... CLI based solution without the unnecessary popups and more options, and using KDiff as a resolver for conflicts.

    Most of the Merger should be pretty self-explanatory, but I included some screenshots to show you what a typical process should include.

🤖 AI-enhanced — based on mod data

Letum's Mod Merger is a utility tool for merging mods, last updated in April 2018. It offers multithreaded modloading, RAR support, and an options menu. With 265 endorsements and 6,776 downloads, it's a niche tool for modders who want to streamline their workflow.

✨ Key Features

Multithreaded modloading boosts performance significantly.
Added RAR support, extracting and remerging RAR files as ZIP while renaming originals as .backup.
ModNames list is now sorted alphabetically.
Options menu includes delete old files and copy all files.
Vanilla files are indexed at the start of merge for improved performance, consuming only 10MB instead of 20MB.
Improved unhandled exception handler shows a popup on crash instead of silent exit.

📊 Pros & Cons

✅ Pros

  • Solid community trust with 265 endorsements and nearly 7k downloads.
  • Multithreaded loading is a real performance win for large mod lists.
  • RAR support is a standout feature—most merger tools ignore that format.

⚠️ Cons

  • Last updated in 2018—likely outdated for current game versions, so expect compatibility issues.
  • The changelog mentions a crash during writing, hinting at potential stability issues.
🎯 Is This For You?
For modders who merge multiple mods into one and want a tool that handles RAR files and multithreading. If you're on an older game version and need a lightweight merger, this could work. Skip if you're on a modern setup—there are more up-to-date alternatives.
📦 Install:Medium· 5-10 minutes

💡 Beginner Tips

  • Since the tool is from 2018, test it on a backup of your mod folder first to avoid corrupting your setup.
  • If you use RAR files, make sure to re-extract the tools folder as noted in the changelog, or RAR support won't work.
  • Enable the options to delete old files and copy all files to keep your merged output clean.

📊 Mod Details

Game
Kingdom Come Mods
Author
Letum
Version
v1.4.2.1
Downloads
6,776
Endorsements
265
Category
Utilities
Created
3/25/2018
Updated
4/2/2018

🔧 How to Install Kingdom Come Mods

Create /Mods/ folder in Data directory. Use Vortex for complex mods.

📖 Full step-by-step install guide for Kingdom Come →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Kingdom Come commands, item IDs, and more.

Keep browsing — more Kingdom Come mods await

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