LuaMancer

LuaMancer is a GameMaker Studio 2 extension that lets you run Luau code. Useful for modding support, consoles, cutscene systems and probably other things too. Designed to be easy to use, secure and most importantly as speedy as possible.

• Run luau scripts that call your GML functions, read/write instance variables, change arrays, structs, and buffers.
• Hot reload, you can edit your scripts as the game runs.
• Safely give modders scripting access, expose functions and assets, infinite loops won't freeze the game.
• Got live references, change GML arrays and structs directly from Lua.
• gm.ref lets Lua give GameMaker a function to call later.
• require works inside a locked root folder that mods cannot escape.
• Luau got some sexy syntax. (continue, +=, ^=, string interpolation, and type annotations, etc...)
• The gml - dll bridge is quite fast, LuaMancer is only 1.5-2.5x slower than native gml depending on the use case.

This is for GameMaker LTS 2026. I mainly developed it for my own usecases and didn't test it on an older runtime so no guarantees there. Only supports windows x64 for now.

If you find a bug, want to give feedback or need a feature, feel free to add me on Discord: @progrstick

The download contains the gamemaker import package, the license, documentation and a simple demo project.