Mystery House
A thing that is probably forever going to haunt me is that I have vivid memories of playing what was, in retrospect, almost certainly Mystery House — yes, that Mystery House, the game that gave rise to Sierra On-Line and the entire graphical adventure game genre — on a school computer in elementary school, but because it was so long ago, and my mind has filled in so many blanks over the years, actual screenshots of the game look almost unrecognizable to me.
