If you're going to relive a nightmare, you might as well do it right.
One thing that's been prevalent now more than ever is video game remakes. Dormant series like Prince of Persia, Splinter Cell, and System Shock aren't first getting brand-new sequels but remakes of the classic entries. Horror titles are no exception, with the recent Resident Evil, Dead Space, and Silent Hill remakes.
Putting aside whether these remakes are necessary, most of them are excellent. They can expand and enrich the world with added details, improve gameplay mechanics, or put more focus on the story. Standard remakes will count, but story remakes or reimaginings will also be included.
If Castlevania is there as an Horror Game then Demon's Souls should be there as well.
Also, you might want to add Shadow of the Colossus there too. Where you play as a mass murdering genocidal maniac on a warpath.
Battle for Bikini Bottom?