You cannot get back the original .yy project files, sprites, or clean GML code.
A command-line tool designed to unpack GMS2 compiled data files into a more manageable structure. How to Free Install and Use GMS2 Decompilers game maker studio 2 decompiler free install
The Truth About Free GameMaker Studio 2 Decompilers: Risks, Realities, and Alternatives You cannot get back the original
: A GitHub project designed to export parts of a data.win file and disassemble code, though it is primarily for advanced users and developers. It pulls out raw PNG images and WAV audio
It pulls out raw PNG images and WAV audio.
A attempts to reverse this process. It takes the compiled executable and tries to recreate something resembling the original source code.
Only download it directly from its official, verified GitHub repository. Never download it from third-party file-sharing sites. How to Legally and Safely Study GameMaker Code