Sometimes, external data files (included files) are not packed into the .exe and will be missing from the decompiled project.
A phase file containing the game's actual assets, including GML code, sprites, and room layouts. Decompilation tools, such as the GM8Decompiler on GitHub gamemaker 8 decompiler link
The tool will generate a folder or a project file. GameMaker 8 Decompiler Link: Understanding the Tool and
Legacy GameMaker executables consist of two primary components: The Runner: including GML code
By mastering the GameMaker 8 decompiler link, you'll gain a deeper understanding of game development and be better equipped to tackle complex projects. Happy decompiling!