If you are looking for actual scares, I reccomend Burgurr Entries, ESPECIALLY if you are into cosmic horror at all.
Another suggestion is NES Godzilla, while not the scariest of pastas, I think it's surprisingly well-written for a story involving a haunted game.
Lastly, I would reccomend "Faith Buddies", written by the same author as the aforementioned NES Godzilla, though I'd argue it's the scarier of the two. Fair warning though, it does touch upon the subject of religious trauma, so if that's a trigger for you, then maybe skip out on this one.