Borderlands 4 serial generator

In case you don't know how to open a .txt file, Here's the Readme. ;)

🎯 BL4 Unified Serial Engine: A Complete Guide

The application has four main sections, or "tabs," which you switch between by clicking the buttons at the top.

1. 🔧 Serial Mutator (The 'Create' and 'Change' Tab)

This section is where you take one item code (a Seed) and create many new, similar, but unique item codes (Serials). It's like having one original toy and using a machine to produce thousands of slightly different versions of that toy.

⚙️ How to Use the Serial Mutator

Item Mutation Target (What kind of item are you making?)

This is a dropdown menu that lets you choose the type of item you want to generate serials for.

Examples: You can choose a Shield, Class Mod, Pistol, Sniper, or Shotgun, among others.

What it does: When you select an item type, it changes the kind of "header" (the very beginning part of the serial) the machine will use.

Manufacturer (Auto-load Header) (Who made the item?)

After picking the item type, this dropdown shows you the available Manufacturers (like brands) for that item.

What it does: If you pick a manufacturer, the application will automatically take the special manufacturer code (the "header") and insert it into the Base Serial Seed box below, saving you from typing it.

Base Serial Seed (The blueprint)

This is a large text box where you put the original serial code—your blueprint. The application starts with a Default Seed already in place.

What it does: The Mutator machine uses this serial's structure and its unique beginning (the Header) to create all the new serials.

Mutation Parameters (How long should the random part be?)

A serial is usually made of a Header and a Tail (the main body of the code). This section controls the length of the Tail.

Min Tail Length and Max Tail Length set the minimum and maximum number of characters the random part of the serial (the "Tail") can be. The default values are 50 and 400.

Target Tail (TG2/TG3) is a specific target length for some advanced types of generation.

Generation Counts (How many serials of each type do you want?)

The term NEW (0) refers to a simple type of mutation. The default count is 10000. This means it will create 10,000 new, random serials based on your blueprint.

TG1 (17), TG2 (33), TG3 (65), TG4 (129) are advanced generation modes for more specific results. They are set to 0 by default, meaning they won't create any serials unless you change the number.

🚀 GENERATE SERIALS

Clicking this button starts the process. The Mutator machine will randomly change a small part of the Tail (between 5 and 15 characters) of the blueprint to create the number of new serials you requested.

The results will show up in the YAML Output box.

📄 YAML Output

This box contains the list of all the new serials the Mutator created. The output is formatted in a specific computer language called YAML.

The two buttons let you:

📋 Copy YAML: Copy the entire list of new serials to your computer's clipboard.

💾 Download: Save the list as a .yml file, which is often needed to load the items into a game editor.

2. ⚡ Batch Generator (The 'Quick Create' Tab)

This section is a simpler, quicker tool for mass-generating serials. It performs a similar but slightly more aggressive random change to the serial codes (10 to 25 random character changes per serial).

Seed Serial: The blueprint code you want to start with. It also defaults to the Default Seed.

Total Count: The number of random serials you want to create (up to 50,000).

⚡ GENERATE: Starts the quick generation process.

Output: The text box where the final list of generated serials appears.

3. 🔍 Serial Analyzer (The 'Identify' Tab)

This is a tool to figure out what a mysterious serial code represents.

Serial to Analyze: The text box where you paste the unknown serial code.

🔍 Analyze: Clicking this button runs the code through a check.

Analysis Result: The machine tries to read a hidden Hex Code (a string of numbers and letters) from the beginning of the serial.

It compares this Hex Code to a list of Known Patterns.

If it finds a match, it will tell you the Manufacturer and Type of item.

If it doesn't match, it will tell you it's Unable to identify.

It also gives you basic info like the code's Length, the Header, and the Tail length.

4. 📖 Header Reference (The 'Lookup' Tab)