From the XScreenSaver collection, https://www.jwz.org/xscreensaver/, we have the interesting Apple ][+ simulator.
According to its description, it can also be run as an application. But how?
If I use Finder to go to
Apple2.saver is present but running it just gets me the System Preferences / Desktop & Screen Saver screen.
If I get a Terminal and try to execute
/Library/Screen\ Savers/Apple2.saver/Contents/MacOS/Apple2 I get an error "-bash: /Library/Screen Savers/Apple2.saver/Contents/MacOS/Apple2: cannot execute binary file". Adding the arguments to it that will probably make it behave in the way I want ("
-text -program /bin/bash") obviously isn't going to help, we're not getting that far.
But it appears to be a valid MacOS binary, and runs just fine as a screensaver:
$ file /Library/Screen\ Savers/Apple2.saver/Contents/MacOS/Apple2
/Library/Screen Savers/Apple2.saver/Contents/MacOS/Apple2: Mach-O 64-bit bundle x86_64
Back in Finder, if I "Show Package Contents" and then look at Contents/MacOS/Apple2 it shows as a "Unix executable" and will start up a Terminal when double-clicked, resulting in the same error output.
What should I be doing?