There is no safe, reliable, or legal "one-click" decompiler for modern GameMaker Studio 2 games, especially those compiled with YYC. Attempting to download such tools from the open web puts your computer at high risk of infection.
Which (Windows, Mac, Linux) are you developing on?
Reverse Engineering GameMaker Studio 2: Understanding Decompilers and Source Recovery game maker studio 2 decompiler free install
Learning how experienced developers implemented specific mechanics, shaders, or UI systems.
When you export your game (to Windows, macOS, HTML5, etc.), the compiler translates that human-readable code into or bytecode —something the computer can run quickly, but that looks like gibberish to a human. There is no safe, reliable, or legal "one-click"
That being said, here are some possible options:
: Expand the Code or Scripts section in the left-hand panel. You can double-click entries to see a representation of the original GML or the underlying assembly if the decompilation is imperfect. Important Considerations Game Maker Studio, Importing games - Stack Overflow You can double-click entries to see a representation
There is no reliable, fully functional, free GMS2 decompiler that can perfectly restore original GML source code with variable names, comments, and exact object structures. The ones that exist are either for GMS1 or only extract sprites/sounds.
GameMaker Studio 2 Decompiler Free Install: A Comprehensive Guide (2026)