UE4SS-RE/RE-UE4SS

Health v2 · maintenance only

Flags: prerelease_only

Adoption not part of the score

2832 stars · 490 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

UE4SS is an injectable Lua scripting system and C++ modding API for Unreal Engine 4/5 games, along with an SDK generator, blueprint mod loader, and live property viewer/editor. It also provides dumping utilities for generating C++ headers, .usmap mapping files, and .umap files from running games.

Use cases

• write lua mods for unreal engine games
• generate c++ sdk headers from a ue4/5 game
• load blueprint mods without replacing game files
• inspect and edit game object properties at runtime
• unlock the game console in unreal engine games
• dump usmap files for unversioned properties
• reverse engineer unreal engine game internals

When to choose

• you want to mod a UE4/5 game with Lua or C++ without modifying game files
• you need runtime introspection of game objects and properties
• you need SDK dumps to build native mods for an Unreal game

When to avoid

• you need a plug-and-play solution guaranteed to work with every game out of the box
• your target game is not built on Unreal Engine 4.12+ or 5.x
• you only want simple asset swaps that don't require scripting

Facets

framework · maturity active

sdk plugin-system interpreter developer-tools gaming-tools windows unreal-engine lua-scripting mod-loader sdk-generator reverse-engineering game-modding live-property-editor game-development automation

Member repositories

For agents

markdown · JSON · MCP: product_card(name="UE4SS-RE/RE-UE4SS")