Modding GitHub Repositories (2026) · Open Source Tools

Point Claude at any game. Skills, tools and the fal MCP that let Claude Code mod almost any PC game you own: recon, reverse engineering, fal-generated art/3D/audio, in-game testing, showcase videos.

The ultimate Geometry Dash modding framework

A clean-room reimplementation of the Project I.G.I. and I.G.I. 2 engine in C#/.NET 10. It plays the original missions faithfully, with a modern renderer (D3D12, Vulkan, WebGPU, ray tracing, DLSS), co-op, mods and a launcher.

The World's First Universal Mod Loader for Unity Games compatible with both Il2Cpp and Mono

Space exploration, trading, and combat game.

Ares-compatible C&C Red Alert 2: Yuri's Revenge engine extension

Mod manager and Modding IDE for League of Legends.

Mod Manager for Mass Effect Original Trilogy and Mass Effect Legendary Edition

A utility to compile & decompile IW engine game scripts.

Voidstrap is a simple yet advanced fork of Bloxstrap, advanced customization and improvements.

TotK Mod Manager, a mod manager and merger for Tears of the Kingdom

EHR is the biggest host-only mod for Among Us, with 450+ roles / add-ons and 16 game modes, along with a Custom Team Assigner application to fully customize your games!

Script extender for The Binding of Isaac: Repentance

Unofficial Windows recompilation of Spider-Man: Edge of Time with PC controls, settings, localization, achievements and mod support.

MetaHook (https://github.com/nagist/metahook) porting for SvEngine (GoldSrc engine modified by Sven-Coop), as a client-side modding framework.

Next generation modding platform for Final Fantasy VII (Steam 2013, Steam 2026 Rerelease, GOG, Windows Store) and Final Fantasy VIII (Steam 2013/Remastered)

Mod development 3D editor tool and file patcher for RE Engine games

Community-driven advanced graphics modifications for AE, SE and VR.

C# modding swiss army knife, powered by cecil.

Mod manager for universal game mods