As with several of Pangea Software's titles, this became open source
and can be downloaded here.
That said, the executable on Mac OS do come with debug symbols.
When on the main menu, hold down F10 and click on
the New Game icon to display a level select prompt.
To enable wireframe displays, hold down Apple (on Macs)
or Tilde (on the open source port) and F8 (in the original)
or F9 (in the open source port).