Hooptober X
It's been too long since I attempted this, so I'm super happy to participate again.

The Rules: There must be 31 films

6 countries
Viy (Russia), Black Sabbath (Italy), Encounters of the Spooky Kind (Hong Kong), A Tale of Two Sisters (South Korea), Spirits of the Dead (France), Rapture (Spain)

8 decades
The Incredible Shrinking Man (1957), Night Tide (1961), Demons (1971), Pieces (1982), The Faculty (1998), The Others (2001), It Comes At Night (2017), Hellraiser (2022),

2 post apocalyptic or natural disaster related films
The Last Man on Earth (1964), It Comes at Night (2017)

1 film with Robert Englund
Eaten Alive (1976)

1 something is underground film
Jigoku (1960)

3 Satan/Devil centered films
Jigoku (1960), Spirits of the Dead (1968), Saint Maud (2019)

1 Amicus film
The House That Dripped Blood (1971)

The worst Dracula film (by Letterboxd rating) that you haven't seen and can access
Dracula 3000 (2004)

1 LGBTQ+ connected film
Hellraiser (2022)

5 Films from De Palma, Wes Craven, Ken Russell, Hitchcock and/or Morehead & Benson
Carrie (1976) Brian De Palma, The People Under the Stairs (1991) Wes Craven, The Lair of the White Worm (1988) Ken Russell, The Birds (1963) Alfred Hitchcock, The Endless (2017) Morehead and Benson

2 Peter Cushing films
The House That Dripped Blood (1971), Tales from the Crypt (1972)

1 film based on a work of or invoking the name Bram Stoker
The Lair of the White Worm (1988)

1 film based on a Clive Barker story
Hellraiser (2022)

1 film that was released the year that you turned 10
The Faculty (1998)

1 Mario Bava film
Black Sabbath (1963)

1 film with an 'x' in the title
X - The Man with the X-Ray Eyes (1963)

And 1 Tobe Hooper Film (There must ALWAYS be a Hooper film)
Eaten Alive (1976)

Bonus films:
The Zodiac Killer (1971), 10 Rillington Place (1971)

Additional films to get to 31:
Carnival of Souls (1962)
It’s Alive (1974)