So I've answered this one a couple times but lemme try think of a few... Resident Evil is one of my absolute favourites, 1 and 3 are like great 2 and 4 are some of my absolute favourites, 7&8 were really great and made me scream in genuine fear lmao.
PT made me throw up from fear...Alan Wake and Silent Hill are great...

Who could forget classics like Slender the Eight pages... basically the grandfather of horror and modern classics in horror like Garten of Banban chapter 7