Installation — Game Dev SDK

Requirements

• Unreal Engine 5.1 or later
• Windows (Win64) build target
• Visual Studio 2022 (for C++ projects)

Install from Fab

1. Purchase SDK Modkit from the Fab Marketplace
2. Open the Epic Games Launcher
3. Go to Library → Vault
4. Find SDK Modkit and click Install to Engine for each UE version you use

Multiple Engine Versions

You can install the plugin to multiple engine versions simultaneously. The UE 5.1–5.3 and 5.4+ versions are separate listings — make sure you install the correct one for your engine version.

Enable the Plugin

1. Open your Unreal Engine project
2. Go to Edit → Plugins
3. Search for ModKit
4. Enable ModKit SDK and restart the Editor when prompted

Verify Installation

After restarting, you should see:

• A ModKit button in the main Editor toolbar
• A ModKit section in Project Settings

If the toolbar button is missing, check the Output Log for any startup errors related to ModKitRuntime or ModKitEditor.

Project Setup

Add to Build.cs (C++ Projects)

To use ModKit APIs in your game C++ code, add the modules to your game's Build.cs:

PublicDependencyModuleNames.AddRange(new string[] {
    "ModKitCore",
    "ModKitRuntime",
});

Editor-only tools

ModKitEditor and ModKitCLI are Editor-only modules. Do not add them as public dependencies in your game module.

Configure Project Settings

Open Project Settings → ModKit to configure the framework:

Setting	Default	Description
ModsDirectory	Mods	Folder name alongside Content/ in the game directory, scanned for mod subfolders
GameVersion	1.0.0	SemVer string checked against mod's MinGameVersion
bEnableModLoading	true	Master switch — disable to ship a build without mod support
bCompressPak	true	Compress PAK output (Oodle)
OutputDirectory	Saved/ModKitOutput	Where packaged mods are written
TargetPlatforms	Windows	Cook target platforms

See Configuration for the full settings reference.

Next Steps

→ Quick Start — Call StartLoadMods() from your game