# BepInEx/BepInEx

Unity / XNA game patcher and plugin framework

Repository: https://github.com/BepInEx/BepInEx
Canonical: https://ross.abutalabs.com/products/bepinex
Language: C#
License: LGPL-2.1
License Family: copyleft
Topics: unity, patcher, unity3d, framework, modding, bepinex, il2cpp, xna-framework, xna, mono, unity-mono, modloader, mod-loader
Last push: 2026-06-28T16:08:10+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 89, release rhythm 45, longevity 100
- inputs: {"age_days": 3126, "days_push": 66, "days_rel": 207, "gap_med": 145.0, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8503, forks 872 (observed 2026-08-28T04:10:23.169659+00:00)

## What it is
BepInEx is a plugin and modding framework for Unity Mono, Unity IL2CPP, and .NET framework games such as XNA, FNA, and MonoGame titles. It injects into games at runtime to load community mods and provides compatibility loaders for other modding frameworks.

## Use cases
- load mods into Unity games
- create a mod loader for a Unity Mono or IL2CPP game
- run community plugins in XNA or MonoGame titles
- patch game assemblies at runtime
- make existing mods from other frameworks work under one loader

## When to choose
- you want to mod or extend a Unity game with C# plugins
- you need broad cross-platform support for Unity Mono modding
- you want compatibility with loaders like MelonLoader, IPA, or Unity Mod Manager

## When to avoid
- you are modding non-Unity, non-.NET games
- you need stable IL2CPP support on macOS or ARM, which is not yet available
- you want a simple asset-swap mod without runtime code injection

## Facets
- artifact type: framework
- maturity: active
- function: plugin-system, developer-tools
- domain: gaming-tools, developer-tools
- platform: windows, cpp, dotnet
- tags: modding, unity, il2cpp, mono, xna, mod-loader, runtime-patching, c-sharp, game-development, macos, linux

## Member repositories
- BepInEx/BepInEx (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:23.169659+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:26:42.749259+00:00, confidence not recorded.
  - readme: https://github.com/BepInEx/BepInEx (fetched 2026-08-28T04:10:23.169659+00:00, sha 4f4dcd5f8c72)
- Data as of 2026-08-30T08:39:29.467469+00:00.