Which horror movies scared you most as an adult

Hard to name just one. I find 'found footage' movies to be scarier on average, I think it's the pseudo-first person point of view that makes it more tense;

[Rec] (2007)
Host (2020)
Hell House LLC (2015)
Deadstream (2022)
As Above, So Below (2014)
Sinister (2012)
Evil Dead (2013)
The Innocents (1961)
Taste of Fear (1961)
Barbarian (2022)
Lake Mungo (2008) - This makes the list thanks to one scene only, one of the best jumpscares ever

I don't get too scared by movies anymore, but those scenes in Barbarian of them sneaking around the underground tunnels creeped me out. And the end of Hereditary, when complete insanity breaks out got me, too.

Turistas, the movie is fucking sick.

The Woman in Black (1989)

Outpost (2008)

It was more the idea of the film that freaked me out, not necessarily the film itself. Regardless, great flick.

that movie about the 2007–2008 financial crisis

The VVitch (2015)

The Fly (1986)