Game Maker Exe Decompiler

How to Decompile GameMaker 8.x Executables with OpenGMK

If you have ever wanted to reverse engineer a game made with GameMaker 8 or 8.1, you might have encountered some difficulties. GameMaker 8 executables are protected by a virtualisation layer that makes them hard to disassemble or debug. Moreover, the game assets are stored in a compressed and encrypted format that is not easy to extract or modify.

Fortunately, there is a tool that can help you decompile GameMaker 8 executables and restore them to their original project files. It's called OpenGMK, and it's an open-source decompiler for GameMaker 8.x executables. OpenGMK can revert any game back to .gmk or .gm81 format respectively, preserving all the sprites, sounds, scripts, rooms, objects, and other resources.

In this article, we will show you how to use OpenGMK to decompile GameMaker 8 executables and explore the game's source code. We will also explain how OpenGMK works and what features it offers.

What is OpenGMK

OpenGMK is a project that aims to reimplement the GameMaker Classic engines, providing a full sourceport of the runner, a decompiler, a TASing framework, and libraries for working with gamedata yourself. It's written in Rust, a fast and safe programming language that guarantees memory safety and concurrency.

OpenGMK was originally a fork of Zach Reedy's gm81decompiler, which was a decompiler for GameMaker 8.1 executables. However, gm81decompiler had some limitations and bugs that made it unreliable and incomplete. For that reason, the developers of OpenGMK decided to create their own decompiler from scratch, using Rust as the language of choice.

OpenGMK has several advantages over gm81decompiler and other similar tools. It supports both GameMaker 8 and 8.1 executables, it's much faster and more accurate, it can handle more games and edge cases, it can fix broken events and deobfuscate code, it has a user-friendly interface and command-line options, and it's open-source and actively maintained.

How to use OpenGMK

Using OpenGMK is very simple and straightforward. You just need to download the latest release from the GitHub repository (https://github.com/OpenGMK/GM8Decompiler/releases) and extract the zip file. You will find an executable file called gm8decompiler.exe (or gm8decompiler if you are on Linux or Mac).

To decompile a GameMaker 8 executable, you just need to drag and drop it onto the gm8decompiler.exe file. Alternatively, you can open a terminal window and run the following command:

gm8decompiler.exe path/to/game.exe

This will start the decompilation process and create a folder with the same name as the game executable in the same directory. Inside this folder, you will find the restored project file (.gmk or .gm81) and a subfolder called \"assets\" that contains all the extracted resources.

You can then open the project file with GameMaker 8 or 8.1 (or any compatible editor) and explore the game's source code. You can also modify the game as you wish, as long as you respect the original author's rights and license.

What are some of the features of OpenGMK

OpenGMK has many features that make it a powerful and versatile tool for decompiling GameMaker 8 executables. Here are some of them:

It supports both GameMaker 8 and 8.1 executables, as well as games with foreign locales.

It can handle games with multiple frames of collision, window icons, FFI functions, lazy loading, etc.

It can fix events that are \"broken\" (non-editable) in the original game.

It can deobfuscate code that was obfuscated by tools like GMProtect or Enigma Virtual Box.

It has a fast and efficient algorithm that can decompile games in seconds.

It has a friendly interface that shows the progress and status of the decompilation.

It has command-line options that allow you to customize the decompilation process.

It's open-source and constantly updated with new 061ffe29dd