First time joining the event of watching 31 horror movies from September 15 to October 31. Really excited as all my picks are movies that I have never watched before, some of them have been on my watchlist for a long time.
The list is ranked in the same way I wrote the movies in the rules section.

Rules:

6 Countries (other than Italy or US):
Nosferatu (Germany), Funny Games (Austria), Perfect Blue (Japan), The Host (South Korea), Titane (Belgium), Speak No Evil (Denmark)

9 Decades:
Nosferatu (1922), Frankenstein (1931), Dead of Night (1945), The Birds (1963), Torso (1973), The Shining (1980), It (1990), Resident Evil (2002), Under the Skin (2013)

5 Zombie Films:
Dawn of the Dead, Resident Evil, 28 Days Later, Shaun of the Dead, Train to Busan

3 cult or conspiracy horror films:
Suspiria, Eyes Wide Shut, Under the Skin

1 film from a Black director with a Black lead:
Sinners

1 film from a Mexican or Central American director:
Cronos

1 Canadian film:
Humanist Vampire Seeking Consenting Suicidal Person

1 Russian or former Russian state film:
Sputnik

The most popular film from the 1940s that you haven't seen:
Dead of Night

2 Post Apocalyptic horror films:
28 Days Later, Annihilation

1 Film with dreams or a dream as part of the plot:
A Nightmare on Elm Street

1 The animals are pissed at us film:
The Birds

1 Silent film:
Nosferatu

Any film from THIS list that you haven't seen:
Army of Darkness

4 based on Novels:
Frankenstein, The Shining, It, The Silence of the Lambs

1 Ernesto Gastaldi written film:
Torso

1 film from 1932:
Doctor X

Specific film:
The Wizard of Oz ('39)

1 Tobe Hooper film:
The Texas Chain Saw Massacre

EXTRA WORK:
Burn Witch Burn, German Chainsaw Massacre & Trick or Treat.