Maybe worth noting: https://stardot.org.uk/forums/viewtopic.php?f=9&t=15189#p204...

```just a word of warning, copy everything off them quick, as the 'side2' goes backwards to the cotton cloth cleaner inside the 5 1/4" case, so basically all the crap caught in it then end up coming out when playing other flip side :('''

I am also reminded of a game, I think it was Rescue On Fractalus that was manufactured with an Atari version on one side, and C64 on the other. I thought that was pretty clever.

We called them flippies.