While UTMT and its forks are tools to decompile any game, projects like represent a different approach: a full, pre-decompiled and mod-ready project of a specific game—in this case, DELTARUNE .

Decompiling a commercial game to steal assets, music, or code to reuse in your own commercial project is illegal and a violation of copyright law.

: Use a tool like 7-Zip or WinRAR to extract the downloaded ZIP folder to a dedicated directory on your computer.

Believe it or not, many indie developers will share old project files if you email them politely. Explain you are a student learning GML. You would be surprised how generous the GameMaker community is.

Modding: Adding new levels, characters, or translations to an existing game often requires a way to hook into the original files. Conclusion

Do not clone the raw code unless you intend to compile it yourself. Look at the "Releases" section on the right side of the page and download the latest .zip file for your operating system (e.g., Windows).

When you compile a game in GMS2, the engine does not create standard machine code (like C++). Instead, it packages your game into a specific format:

Ensure you have the latest .NET Desktop Runtime installed if the tool fails to launch. 📖 Deep Guide: How to Decompile

It pulls out raw PNG images and WAV audio.