There must be 31 films
6 countries (USA / Italy / UK / Spain / Iceland / South Korea / Japan)
8 decades (1959, 1964, 1972, 1984, 1995, 2009, 2012, 2021)
2 post apocalyptic or natural disaster related films - Resident Evil: The Final Chapter (2016) / Godzilla (1954)
1 film with Robert Englund - Choose or Die (2022)
1 something is underground film - C.H.U.D. (1984)
3 Satan/Devil centered films - The Devil’s Doorway (2018) / The House of the Devil (2009) / Bloodbath at the House of Death (1984)
1 Amicus film - Tales from the Crypt (1972)
The worst Dracula film (by Letterboxd rating) that you haven't seen and can access - Dracula 3D (2012)
1 LGBTQ+ connected film - Possessor (2020)
5 Films from De Palma, Wes Craven, Ken Russell, Hitchcock and/or Moorhead & Benson. - Synchronic (2019) / The Lair of the White Worm (1988) / A Nightmare on Elm Street (1984) / Murder à la Mod (1968) / The Birds (1963)
2 Peter Cushing films - The Mummy (1959) / Horror Express (1972)
1 film based on a Clive Barker story - Hellraiser (1987)
1 film that was released the year that you turned 10 / 1 film based on a work of or invoking the name Bram Stoker - Dracula: Dead and Loving It (1995)
1 Mario Bava film - Blood and Black Lace (1964)
1 film with an 'x' in the title - Climax (2018)

And 1 Tobe Hooper Film - The Texas Chain Saw Massacre (1974)

Bonus Films:
Train to Busan (2016)
Lamb (2021)
The Last Exorcism (2010)
Mad God (2021)
Ichi the Killer (2001)
Suspiria (1977)
Malignant (2021)
The Conjuring (2013)
Mandy (2018)

Super Bonus films:
The Zodiac Killer (1971)
10 Rillington Place (1971)
Shaky Shivers (2023)