Airtime for macOS (Apple Silicon)

Double-click Airtime.command. It runs the DOS game in DOSBox-X
(dosbox-x.app, DOSBox-X's own macOS release, licence in dosbox-x/).

This download is not signed by Apple, so macOS may refuse to open it the
first time. Either right-click Airtime.command and choose Open (on newer
macOS, then System Settings > Privacy & Security > Open Anyway), or run
this once in Terminal, from the folder that holds this Airtime folder:

    xattr -dr com.apple.quarantine Airtime

