My first attempt at Hooptober since joining this site. I will fill out the entries as I watch them. I will also be adding my usual Halloween-movie-challenge caveat of all entries being (preferably) movies I have not seen before, or movies I haven't seen in over a decade:

The catagories:
There must be 31 films:

6 countries
Argentina: Cuando acecha la maldad [When Evil Lurks] (2023)
Italy: La maschera del demonio [Black Sunday] (1960)
Spain: La cabina [The Telephone Box] (1972)
Sweden: Häxan (1922)
UK: The Lair of the White Worm (1988)
US: It Lives Inside (2023)

8 decades
1920s: Häxan (1922)
1950s: Day the World Ended (1955)
1960s: La maschera del demonio [Black Sunday] (1960)
1970's: Invasion of the Body Snatchers (1978)
1980's: The Lair of the White Worm (1988)
1990s: Body Bags (1993)
2000s: Dracula 3000 (2004)
2020s: It Lives Inside (2023)

2 post apocalyptic or natural disaster related films
Day the World Ended (1955)
Phase IV (1974)

1 film with Robert Englund
New Nightmare (1994)

1 something is underground film
The Midnight Meat Train (2008)

3 Satan/Devil centered films
Häxan (1922)
The Exorcist: Believer (2023)
The Seventh Victim (1943)

1 Amicus film
The Skull (1965)

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

1 LGBTQ+ connected film
Witchboard (1986)

5 Films from De Palma, Wes Craven, Ken Russell, Hitchcock and/or Morehead & Benson
Altered States (1980)
The Lair of the White Worm (1988)
New Nightmare (1994)
Shocker (1989)
Sisters (1972)

2 Peter Cushing films
Dracula (1958)
The Skull (1965)

1 film based on a work of or invoking the name Bram Stoker
Dracula 3000 (2004)

1 film based on a Clive Barker story
The Midnight Meat Train (2008)

1 film that was released the year that you turned 10
Ernest Scared Stupid (1991)

1 Mario Bava film
La maschera del demonio [Black Sunday] (1960)

1 film with an 'x' in the title
Häxan (1922)

And 1 Tobe Hooper Film (There must ALWAYS be a Hooper film)
Body Bags (1993)

And the rest:
Alone (2020)
Der Farbe [The Color Out of Space] (2010)
Gothic (1986)
Haunted Mansion (2023)
Head of the Family (1996)
In the Mouth of Madness (1994)
Island of Lost Souls (1932)
The Nightmare Before Christmas (1993)
No One Will Save You (2023)
Opera (1987)
Red Spells Spell Red (1983)
Saw X (2023)
Le squelette joyeux [The Merry Skeleton] (1898)
Thelma (2017)
V/H/S 85 (2023)