What if Dwarf Fortress refuses to start on macOS

Depending on your security settings, you may see the following error message when trying to launch dfhack for the first time:

In this case, right-click the dfhack script, and choose Open. You will see another message and will be able to proceed with launching the game:

This needs to be done only once, and is caused by very restrictive default settings in newer macOS versions that disallow running of any unsigned applications.