Developer: New World Computing
Release Date: June 1, 2001
Did you like Heroes of Might and Magic III and want more of it? Like a lot more? Good news - between 1999 and 2001 New World Computing put out eight expansion packs under the heading of Heroes Chronicles. Some were retail, others were free, but retailers like GOG have collected them all into one package.
Note that the way VCMI works you will also need the base Heroes of Might and Magic III game installed.
Although my aim is to host signed and notarized game bundles on Mac Source Ports, the VCMI project recently added Apple Silicon support and is sufficiently complex that at this time I'm going to link to their work. We may host a notarized version in the future.
Because the app bundle is not notarized, on first run you may run into issues. The shortest answer is to right-click on the app bundle (VCMI.app) and select Open. The long answer is here.