I don’t know where my Dad got them, but they were pretty much all Apogee games, so he might have order them directly. I was really young, 4 or 5, so I didn’t really ask for them. My Dad would just install them for us and create directory shortcuts so we could load them easily. Part of how I learned to type and read was spelling out, “keen4” and either getting the game to load or, “Bad command or file name.”
I mean, the point of a mermaid isn’t that it’s a sexy looking fish, it’s that other than its tail, it looks like beautiful human women. In some stories, sailors don’t even realize they’re taking to mermaids because their tails are underwater. Also, mermaids were generally considered bad omens or malicious entities, and when they did seduce humans, it was usually to kill them, so it’s not like the folklore was very pro-mermaid sex.