Unzip the folder to a dedicated location on your PC.
A decompiler is a tool that takes a compiled game file (like an .exe for Windows) and attempts to reverse-engineer it back into a readable project format (.yyp). While GameMaker games are compiled into bytecode, tools like UndertaleModTool can read this data and extract: The logic and code of your objects. Sprites and Strips: The visual assets and animations. Rooms and Layers: The level design layouts. Shaders and Fonts: Technical rendering assets. The Best Free Tool: UndertaleModTool game maker studio 2 decompiler free install
Despite the name, UndertaleModTool (UTMT) is the industry standard for decompiling and modding almost any game made with GameMaker Studio 2. It is open-source, free, and actively maintained on GitHub. How to Install UndertaleModTool Unzip the folder to a dedicated location on your PC
Here is everything you need to know about finding, installing, and using a GMS2 decompiler for free. What is a GameMaker Studio 2 Decompiler? Sprites and Strips: The visual assets and animations
The search for a GameMaker Studio 2 (GMS2) decompiler often stems from a common developer nightmare: losing a project due to a corrupted hard drive, a failed cloud sync, or an accidental deletion without a backup. If you find yourself holding a compiled executable of your own game but lacking the source code, a decompiler is your last line of defense.
If you'd like to know more about or need help fixing specific export errors in the tool, just let me know!