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Available on winget

Install GM8Decompiler

A decompiler for GameMaker 8.x executables

Install with winget
winget install --id OpenGMK.GM8Decompiler
Upgrade
winget upgrade --id OpenGMK.GM8Decompiler
Uninstall
winget uninstall --id OpenGMK.GM8Decompiler

About GM8Decompiler

An open-source decompiler for GameMaker 8.x executables. Reverts any game back to .gmk or .gm81 format respectively.

What's new in 2.2.0

- first release in almost three years - so three years' worth of performance benefits as a result of updating from rust 1.59 to 1.76 - fix a decryption error, which was being inadvertently caused by gm82 in the way it writes EXEs - add support for decompiling 810 and 811 room formats, by prepending the relevant code to room/instance creation events

Read release notes

Version history

Version Updated Notes
2.2.0 Unknown - first release in almost three years - so three years' worth of performance benefits as a result of updating from rust 1.59 to 1.76 - fix a decryption error, which was being inadvertently caused by gm82 in the way it wr...
2.1.1 Unknown - fix minor issue with double clicking the executable on windows not always pausing