: It is strictly illegal to decompile someone else's game and then sell or redistribute that code as your own. Doing so violates copyright law and the GameMaker EULA.
GameMaker 8.0 and 8.1 used a specific architecture where the game’s assets (sprites, sounds, and backgrounds) and the GML (GameMaker Language) code were packed into a single executable ( .exe ). Unlike modern GameMaker (GMS2), which uses a Virtual Machine or YYC, GM8 code was stored in a format that—while compiled—remained relatively close to its original structure. gamemaker 8 decompiler link
Here’s a clean, useful feature idea for a tool or resource hub, presented as you might see in a tool’s feature list or GitHub README. : It is strictly illegal to decompile someone