I believe you're referring to (or possibly a specific executable like gamemaker.exe or a runner file) being patched to version 1001 (which typically corresponds to 2022.1.0.1001 or similar runtime versions in GameMaker’s numbering scheme).
Version 1.001 was the last official patch (released around 2001/2002). It addressed critical stability issues and balance tweaks from the launch version (1.000). For the modern player, having a "clean" 1.001 patched executable is essential for several reasons: gamemdexe patched to version 1001 best
Remember: in the world of PC optimization, sometimes the best upgrade isn’t new hardware—it’s the right software patch. I believe you're referring to (or possibly a
: While 1.001 alone won't make the game run perfectly on Windows 10 or 11, it is the only version compatible with community wrappers like For the modern player, having a "clean" 1
From official release notes (compiled from memory of that era):
Because the gamemd.exe file dates back to the early 2000s (despite being patched to v1.001), it does not know how to handle modern processor speeds or high screen resolutions. Without this setting, the game will likely launch with a black screen, crash instantly, or run at unplayable speeds.