A dozen and some.

QUICK EASY RULES:

There must be 31 horror films

COUNTRIES REPRESENTED (6 required other than Italy or US)
Canada, France, Japan, Mexico, Russia, South Korea, United Kingdom

DECADES REPRESENTED (9 required)
1920s, 1930s, 1940s, 1950s, 1960s, 1970s, 1980s, 1990s, 2000s, 2010s, 2020s

5 ZOMBIE FILMS:
The Return of the Living Dead
Mortuary
The Girl with All the Gifts
One Cut of the Dead
The Night Eats the World

3 CULT OR CONSPIRACY FILMS
All the Colors of the Dark
Apostle
Suspiria (2018)

1 FILM FROM A BLACK DIRECTOR w/ A BLACK LEAD
Ganja & Hess

1 FILM FROM A MEXICAN OR CENTRAL AMERICAN DIRECTOR
Cronos

1 CANADIAN FILM
Scanners

1 FORMER SOVIET STATE FILM
Viy (Russia)

MOST POPULAR & ACCESSIBLE 1940s YET TO BE SEEN
The Uninvited

2 POST-APOCALYPTIC HORROR
10 Cloverfield Lane
The Girl with All the Gifts

1 FILM WITH DREAMS
Jacob's Ladder

1 ANIMALS ARE PISSED FILM
Grizzly

1 SILENT FILM
Dr. Jekyll and Mr. Hyde

4 FILMS BASED ON NOVELS
Dr. Jekyll and Mr. Hyde
The Wizard of Oz
What Ever Happened to Baby Jane?
The Girl with All the Gifts

ANY UNSEEN FILM FROM CINEMONSTER'S FAVORITES
Brotherhood of the Wolf

1 ERNESTO GASTALDI WRITTEN FILM
All the Colors of the Dark

1 FILM FROM 1932
Freaks
Murders in the Rue Morgue

1 REQUIRED FILM
The Wizard of Oz

1 TOBE HOOPER FILM
Mortuary

*assorted others to hit 31*

BONUS FILMS
Burn Witch Burn
Trick or Treat
The German Chainsaw Massacre

Review them all!

Clearly one film can satisfy multiple criteria. Viewing and reviewing will begin at 12:01am cst on Sept 15th.