...Wow. The only card I have left to play is that I was using Mini vMac (Macintosh II version), and not Basilisk II.
I just can't believe that a piece of software whose only function is to silently move one sprite across the screen took three point releases to achieve a state where it still...
Have you both been using the Demo button to try to see the screensaver? It looks like this module is incompatible with that feature. What works is leaving the mouse in the "sleep now" corner of the screen (chosen in the Setup dialog).
But you're going to be so disappointed at how basic it is...
Well, I got it running in After Dark 3.0b on 7.5.5 (screenshot attached)... but it doesn't seem to contain any sound whatsoever. So I guess the OP remembers either a later, enhanced version (which I don't see any sign of having existed), or someone else's more elaborate take on the same idea...
Those actually aren't arcade machine ROMs. They're arcade game parodies in the format of interactive fiction, also known as text adventures. The .z5 files are Inform (Z-Machine) games, and the .gam files are TADS games. You need an interpreter like Zoom to play them.
If you're unfamiliar with...
The creator of Tetris Max is holding a contest this Saturday to crown the game's world champion:
https://www.bigmessowires.com/2023/09/29/announcing-the-tetris-max-high-score-contest-october-14/