Hey I hate to be the bearer of bad news but I did download and got an error opening the .exe:
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ERROR in action number 1
of Create Event for object <undefined>:
Error attempting to load wad file with unexpected size 7933952 szFORM 3
I’m not too familiar with GameMaker, but it looks like the download may be missing the required WAD/data files. You may need to ZIP the full exported folder together with the .exe so everything the game needs is included.