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Head-to-head · Game Mod Loaders

BepInEx vs UE4SS

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score BepInEx #2 in Game Mod Loaders 9.2/10 Free plan Free plan✓ 3 of 4 features Visit BepInEx
UE4SS #6 in Game Mod Loaders 8.4/10 Open source ✓ 1 of 4 features Visit UE4SS

BepInEx leads on 0 checks, UE4SS on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreBepInEx · 9.2/10
  • Free planonly BepInEx
  • Most featuresBepInEx · 3 of 4

BepInEx scores higher on our rubric for game mod loaders: 9.2 against 8.4 out of 10; our editors rank them #2 and #6.

BepInEx is the better fit for multi-framework game modding. UE4SS is the better fit for unreal Engine game modding.

  • BepInEx fits best

    Multi-framework game modding

  • UE4SS fits best

    Unreal Engine game modding

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Side by side

Feature BepInEx 9.2/10 Visit ↗ UE4SS 8.4/10 Visit ↗
At a glance
Editor score 9.2 8.4
Ranking #2 in Game Mod Loaders #6 in Game Mod Loaders
Best for Multi-framework game modding Unreal Engine game modding
Pricing model Free Free
Starting price Free plan Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Desktop Desktop
Platforms Windows, macOS, Linux Windows
Support Community, Docs Community, Docs
Built for Solo, Small business Solo, Small business, Mid-market, Enterprise
Features BepInEx 3/4 · UE4SS 1/4
Plugin support ✓ (best) Not checked yet
Load-order control ✓ ✓
Mod profiles Not checked yet Not checked yet
Dependency handling ✓ (best) Not checked yet
Specs
Supported games Not checked yet Not checked yet
Supported platforms Windows, macOS, Linux Windows
Mod loading method Injection Injection
Our review
Pros
  • Supports Unity Mono, IL2CPP, .NET, XNA, FNA, and MonoGame
  • Combines plugin loading, Harmony patching, configuration, and logging
  • Dependency-aware ordering helps manage plugin load sequences
  • Lua and C++ APIs support script-based and native mods
  • Blueprint loading, actor spawning, and live property editing
  • Automatic or manual injection with configurable mod ordering
Cons
  • Injection-based loading depends on compatible desktop game installations
  • Unity Mono has stable releases, while broader framework coverage varies
  • No built-in AI features
  • Windows is the published supported platform
  • Injection requires installation alongside a game executable
  • The broad Unreal Engine scope may require game-specific compatibility checks
Our verdict

BepInEx is an open-source framework for loading plugins and modifying desktop games built with Unity Mono, Unity IL2CPP, .NET, XNA, FNA, and MonoGame technologies. It is aimed at game mod developers and players installing supported plugins…

Read the review →

UE4SS is an open-source modding system for Unreal Engine 4 and 5 games, aimed at players and developers who want to load, create, or debug mods on Windows. It injects into supported game processes and combines Lua scripting with a C++…

Read the review →
  1. BepInExGame Mod Loaders 9.2Free plan
  2. UE4SSGame Mod Loaders 8.4Open source

Strengths and trade-offs

  • BepInEx — where it wins

    • Supports Unity Mono, IL2CPP, .NET, XNA, FNA, and MonoGame
    • Combines plugin loading, Harmony patching, configuration, and logging
    • Dependency-aware ordering helps manage plugin load sequences

    Where it doesn't

    • Injection-based loading depends on compatible desktop game installations
    • Unity Mono has stable releases, while broader framework coverage varies
    • No built-in AI features

  • UE4SS — where it wins

    • Lua and C++ APIs support script-based and native mods
    • Blueprint loading, actor spawning, and live property editing
    • Automatic or manual injection with configurable mod ordering

    Where it doesn't

    • Windows is the published supported platform
    • Injection requires installation alongside a game executable
    • The broad Unreal Engine scope may require game-specific compatibility checks

More comparisons

All game mod loaders comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update