An open-source decompiler for GameMaker 8.x executables. Reverts any game back to .gmk or .gm81 format respectively.
Publisher’s description
What is GM8Decompiler?
GM8Decompiler is an open-source developer utilitie program for Windows from OpenGMK.
Installation and requirements
Official installers exist for 64-bit and 32-bit as Portable. It runs without installation (portable).
Updates and version history
The current version is 2.2.0, released on February 12, 2024. 2 versions are listed since March 9, 2021, each with links to its own installer files. That is about 0.7 releases a year. The last update is more than a year old.
Popularity and file types
The source code on GitHub (OpenGMK/GM8Decompiler) has 202 stars. Similar programs include WinMerge, jq and x64dbg.
Project description on GitHub: “A decompiler for GameMaker 8.x executables”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
- No update for more than a year
In short: GM8Decompiler is an open-source developer utilitie tool for 64-bit and 32-bit PCs. Updates have slowed down.
Is GM8Decompiler safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
A68A4CDBD455A2164885C8D854E5F7891324043CDDAD19B80BF1D9C4D958A860· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 2 versions ›2 versions over 3 years · about 0.7 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.2.0Latest | February 12, 2024 | — | 32-bit ZIP64-bit ZIP |
| 2.1.1 | March 9, 2021 | — | 32-bit ZIP64-bit ZIP |
Install from the command line
Silent install ›winget install --id OpenGMK.GM8Decompiler -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- OpenGMK
- Category
- Developer utilities
- Licence
- GPL-2.0
- Price
- Free
- Source code
- github.com/OpenGMK/GM8Decompiler
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- Portable
- Version
- 2.2.0
- Released
- February 12, 2024
- Added to the catalogue
- October 24, 2025
- Versions listed
- 2
- Updates / year
- 0.7
- GitHub stars
- 202
- GitHub forks
- 12
- Website
- github.com
- winget ID
- OpenGMK.GM8Decompiler
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is GM8Decompiler free?
Yes. GM8Decompiler is open-source software under the GPL-2.0 licence.
Is GM8Decompiler safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install GM8Decompiler with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does GM8Decompiler run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
Where can I download an older version of GM8Decompiler?
The versions page lists all 2 versions with links to their official installer files, back to March 9, 2021.
Can I use GM8Decompiler without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to GM8Decompiler?
WinMerge, jq, x64dbg, jadx and delta. The alternatives page compares them.
