-
Download both files for the "offline backup game installers".
-
Extract:
innoextract --output-dir=~/Downloads/HoMM3 "setup_heroes_of_might_and_magic_3_complete_4.0_(28740).exe"
-
From the VCMI Launcher, choose to copy in the files. Select the
~/Downloads/HoMM3
directory. -
Delete the
setup_heroes_of_might_and_magic_3_complete_4.0_(28740)*
files and~/Downloads/HoMM3
.
It's also possible to run the import CLI using flatpak run --command=vcmibuilder eu.vcmi.VCMI --data $PATH
, but any path seems to be interpreted from within the Flatpak sandbox.