Gamemaker Studio 2 — Decompiler
For modern GMS2 games, the "UndertaleModTool" is currently the gold standard. Despite the name, it works for any GameMaker Studio game.
Every GameMaker game includes an implicit license. YoYo Games' own EULA states you cannot reverse engineer, decompile, or disassemble software created with GameMaker. gamemaker studio 2 decompiler
Ethical Guidelines:
| Scenario | Ethical? | Legal Risk | | :--- | :--- | :--- | | Decompiling your own game (lost source) | Yes | Low (no distribution) | | Decompiling for personal modding (non-commercial) | Gray area | Medium (depends on game dev) | | Decompiling to learn techniques (no redistribution) | Gray area | Medium | | Decompiling and reusing assets/code commercially | No | High (liable for damages) | | Distributing a decompiler tool | Yes (tool itself) | Low (if open-source for education) | For modern GMS2 games, the "UndertaleModTool" is currently
Key point: Just because you can decompile a game does not mean you have permission to use that code. The law is not neutral on decompilation
The law is not neutral on decompilation.