Mine would be Project Zero 2. I never finished. Scared the shit out of me.
Definitely one of the scariest games I've played, but I like scary games/movies and I was enjoying it way too much not to finish. It's a shame hardly anyone played this one, it's absolutely superb.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.