I heard a familiar sound coming from the laptop today. Jay was watching a YouTube video. It was his favourite game on our original IBM PC from mid-1980's and he was watching a video clip of the game-play. I knew I must've mentioned Moon Bugs here before and sure enough, that had occurred several times more than a decade ago.
There's also a playable copy of it in some Internet, old-DOS-game archives. However, the online emulator runs much faster than a Intel 8088 clocked at 4.77 MHz. So it is impossible to play the game anymore on modern hardware. Still, this video is a suitable reminder.