RED4ext vs UE4SS
RED4ext
docs.red4ext.comUE4SS
docs.ue4ss.comSide by side
| Figure | RED4ext | UE4SS |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Game Mod Loaders | 8.1 (#5) | 7.0 (#23) |
| Installation | Installation involves downloading the latest ZIP, extracting it into the game directory, and launching the game. | The basic installation uses a non-dev, non-experimental release extracted into the game's Binaries/Win64 directory; mod developers can use the zDEV version. |
| Purpose | RED4ext is a script extender for Cyberpunk 2077 that lets modders interact with or extend the game's scripting system. | UE4SS is a Lua scripting system, C++ modding API, SDK generator, Blueprint mod loader, live property editor, and set of dumping utilities for UE4/5 games. |
Plans
In their own words
RED4ext
RED4ext is a free Windows script extender and plugin manager for Cyberpunk 2077. It gives modders access to the game's scripting system so plugins can add features, alter behavior, add scripting functions, or call existing game functions. RED4ext loads plugins only for supported game runtime versions, while also allowing plugins aimed at the latest defined runtime or independent of runtime versions. RED4ext.SDK exposes the scripting virtual machine, native classes and functions, and reversed game structures. Developers can use any toolchain that produces x86-64 output with the __fastcall calling convention, including CMake, Premake, or Visual Studio. Plugins can attach custom game states around game-system availability and are placed in red4ext/plugins. Each plugin receives a logger, with named logs under red4ext/logs. Configuration is TOML stored in red4ext/config.ini, where plugin loading and individual plugins can be disabled. The MIT-licensed project lists v1.30.0 as its latest release.