Are there any games that only you seem to remember?

I think there are aliens in it. The theme song is unforgettable. It goes, “da da da” or something like that. Is there a game locked in your memory, from a distant past, whose name you don’t remember and no one else mentioned? In the fog of educational games and random items that come with your home PC, is there anything you wish you could recall? Maybe someone else will know what you’re talking about. Come to think of it, they might not be aliens. They might just be weird fish.

Are there any games that only you seem to remember?