UE4/5 Modding Guides

A collection of UE4 (and 5) Modding Guides.
The perfect place for anyone new, to learn UE modding and start creating mods today.

Before we begin...

These two tools every modder needs to have:

• Unreal Engine
• FModel

Where to start?

If you're completely new, I would suggest picking on a simple mod idea/goal that will teach you the basics, for example; texture swap or just a value change within one of the files.
Just so you get the idea and the principles of UE4/5 modding and how it works.

(If you're new and want to jump head-first into custom maps... then don't, that doesn't work like that).

The Basics

We will start with how we can browse and export game files.

• Finding AES key (.pak encryption)
• Exporting - FModel
• Exporting - UModel
• Previewing Animations - UModel
• Browsing UAssets - FModel

Basic Modding

Let's start changing values!
This is essential to ANY value changing.

• Editing UAsset values - UAssetGUI (UE4)
• Editing UAsset values - Hex (Manual hex, in case UAssetGUI fails)
• Editing UMaps - stove (UE4)
• Disabling/Removing textures of objects (UE4)
• Creating Pak Files - UnrealPak (UE4)
• Mod example - modifying Blueprint default values (UE4)

Intermediate Modding

Dummying/replacing Assets like textures, materials, static meshes, and SkeletalMeshes (such as characters).

• Creating a UE4/5 project
• Cooking/compiling in UE4 and UE5 with chunks
• Replacing textures
• Changing StaticMesh
• Changing SkeletalMesh
• Merging SkeletalMesh
• Replacing Fonts (Coming soon)

Advanced Modding

• Dummying a Material for MaterialInstances
• Introduction to Blueprint/Logic Mods
• Introduction to Blueprint Dummying/Replication

Blueprint Modding

I won't be going into detail as that is where UnrealEngine4 experience comes in and this will cover the bare basics.
Note: If you're new to UE4 - just tinker with it, everything is on YouTube.

• Working with a mod loader - UML/UE4SS/DML/NML
• ModActor structure and lifecycle
• Creating a Widget
• Hotkeys for BP mods
• Config Variables - mod configurations
• Custom Mod GameSaves
• Mod Example - Custom logger (UserWidget)

Expert

At this stage, you already know how to swap/modify any UAsset and do blueprints as your second language, YET looking for more advanced stuff to try.

• "Injecting" custom Widgets into game menus using Blueprints
• Dumping C++ headers (UHT) using UE4SS
• Dummying/replicating C++ headers using UHT
• Mod Example - Headers in practice, (game: Sprawl) (Coming Soon)

Masterclass

I won't be covering any more complex witch-craft so if you've learned all of the above, then you can continue learning and evolving on your own.

Game Memory

Useful for creating speedrunning livesplit, custom randomizers and even trainers.

• Finding CE pointers (Coming Soon)
• Finding offsets using UE4SS (Coming Soon)

Blender (3D Modelling)

• Importing models (.glTF2 and .psk files) (Coming Soon)
• Importing animations (.psa files) (Coming Soon)

Substance Painter (Texturing)

• Importing textures to Substance (Coming Soon)
• Exporting to UE4 - Albedo, Normal and ORM (Coming Soon)

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Useful Links/Tools

Browse and Edit UAssets

• FModel
• UModel
• UAssetGUI
• stove

UE

• Epic Launcher
• Universal Unreal Engine 4 Unlocker (UUU)
• UnrealPak
• UE4SS - UE4/5 Scripting System

3D Modeling

• Blender or Steam's version
• Blender 4 Psk plugin - written by DarklightGames
• Blender 3 Psk plugin - written by Befzz

Reverse Engineering

• Cheat Manager - Written by Dark Byte
• x64dbg - Written by mrexodia
• BinaryNinja
• Hex Editor Neo

The rest

• All available/known UE modding tools written by Buckminsterfullerene.

Discords

UE Modding

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Credits

• FatihG_ for teaching me how to mod.
• atenfyr(adolescent in Discord) for UAssetGUI and UAssetAPI.
• RussellJerome for creating the ModLoader.

Special Thanks:

• LongerWarrior, JanisSG, Jan and Animayyo for their amazing support throughout the whole journey of GR modding.
• Mythical
• Narknon
• Cranch
• Buckminsterfullerene02
• Atenfyer/Adolescent
• Spuds
• Truman
• Lisht/Kein
• KunoDemetries

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